MDU RESOURCES GROUP, INC. Report of Management The management of MDU Resources Group, Inc. is responsible for the preparation, integrity and objectivity of the financial information contained in the consolidated financial statements and elsewhere in this Annual Report. The financial statements have been prepared in conformity with generally accepted accounting principles as applied to the company's regulated and nonregulated businesses and necessarily include some amounts that are based on informed judgments and estimates of management. To meet its responsibilities with respect to financial information, management maintains and enforces a system of internal accounting controls designed to provide assurance, on a cost-effective basis, that transactions are carried out in accordance with management's authorizations and that assets are safeguarded against loss from unauthorized use or disposition. The system includes an organizational structure which provides an appropriate segregation of responsibilities, effective selection and training of personnel, written policies and procedures and periodic reviews by the Internal Auditing Department. In addition, the company has a policy which requires all employees to acknowledge their responsibility for ethical conduct. Management believes that these measures provide for a system that is effective and reasonably assures that all transactions are properly recorded for the preparation of financial statements. Management modifies and improves its system of internal accounting controls in response to changes in business conditions. The company's Internal Auditing Department is charged with the responsibility for determining compliance with company procedures. The Board of Directors, through its audit committee which is comprised entirely of outside directors, oversees management's responsibilities for financial reporting. The audit committee meets regularly with management, the internal auditors and Arthur Andersen LLP, independent public accountants, to discuss auditing and financial matters and to assure that each is carrying out its responsibilities. The internal auditors and Arthur Andersen LLP have full and free access to the audit committee, without management present, to discuss auditing, internal accounting control and financial reporting matters. Arthur Andersen LLP is engaged to express an opinion on the financial statements. Their audit is conducted in accordance with generally accepted auditing standards and includes examining, on a test basis, supporting evidence, assessing the company's accounting principles used and significant estimates made by management and evaluating the overall financial statement presentation to the extent necessary to allow them to report on the fairness, in all material respects, of the financial condition and operating results of the company. Martin A. White Warren L. Robinson President and Chief Executive Vice President, Executive Officer Treasurer and Chief Financial Officer CONSOLIDATED STATEMENTS OF INCOME MDU RESOURCES GROUP, INC. Years ended December 31, 1999 1998 1997 (In thousands, except per share amounts) Operating revenues $1,279,809 $896,627 $607,674 Operating expenses: Fuel and purchased power 51,802 49,829 45,604 Purchased natural gas sold 349,215 158,908 77,082 Operation and maintenance 608,104 448,290 283,894 Depreciation, depletion and amortization 81,818 77,786 65,767 Taxes, other than income 29,119 24,871 23,766 Write-downs of oil and natural gas properties (Note 1) --- 66,000 --- 1,120,058 825,684 496,113 Operating income 159,751 70,943 111,561 Other income -- net 9,645 10,922 4,008 Interest expense 36,006 30,273 30,209 Income before income taxes 133,390 51,592 85,360 Income taxes 49,310 17,485 30,743 Net income 84,080 34,107 54,617 Dividends on preferred stocks 772 777 782 Earnings on common stock $ 83,308 $ 33,330 $ 53,835 Earnings per common share--basic $ 1.53 $ .66 $ 1.24 Earnings per common share--diluted $ 1.52 $ .66 $ 1.24 Dividends per common share $ .82 $ .7834 $ .7534 Weighted average common shares outstanding -- basic 54,615 50,536 43,315 Weighted average common shares outstanding -- diluted 54,870 50,837 43,478 The accompanying notes are an integral part of these consolidated statements. CONSOLIDATED BALANCE SHEETS MDU RESOURCES GROUP, INC. December 31, 1999 1998 (In thousands) ASSETS Current assets: Cash and cash equivalents $ 77,504 $ 39,216 Receivables 169,560 124,114 Inventories 64,608 44,865 Deferred income taxes 15,600 16,918 Prepayments and other current assets 24,424 15,536 351,696 240,649 Investments 43,128 43,029 Property, plant and equipment 2,042,281 1,810,800 Less accumulated depreciation, depletion and amortization 794,105 726,123 1,248,176 1,084,677 Deferred charges and other assets 123,303 84,420 $1,766,303 $1,452,775 LIABILITIES AND STOCKHOLDERS' EQUITY Current liabilities: Short-term borrowings $ 14,693 $ 15,000 Long-term debt and preferred stock due within one year 4,428 3,292 Accounts payable 81,262 60,023 Taxes payable 6,842 9,226 Dividends payable 12,171 10,799 Other accrued liabilities, including reserved revenues 67,931 71,129 187,327 169,469 Long-term debt (Note 5) 563,545 413,264 Deferred credits and other liabilities: Deferred income taxes 213,771 173,094 Other liabilities 115,627 129,506 329,398 302,600 Preferred stock subject to mandatory redemption (Note 6) 1,500 1,600 Commitments and contingencies (Notes 11, 14 and 15) Stockholders' equity: Preferred stocks (Note 6) 15,000 15,000 Common stockholders' equity: Common stock (Note 7) Authorized -- 150,000,000 shares, $1.00 par value in 1999, 75,000,000 shares, $3.33 par value in 1998 Issued -- 57,277,915 shares in 1999 and 53,272,951 shares in 1998 57,278 177,399 Other paid-in capital 372,312 171,486 Retained earnings 243,569 205,583 Treasury stock at cost - 239,521 shares (3,626) (3,626) Total common stockholders' equity 669,533 550,842 Total stockholders' equity 684,533 565,842 $1,766,303 $1,452,775 The accompanying notes are an integral part of these consolidated statements. CONSOLIDATED STATEMENTS OF COMMON STOCKHOLDERS' EQUITY MDU RESOURCES GROUP, INC. Years ended December 31, 1999, 1998 and 1997 Other Common Stock Paid-in Retained Treasury Stock Shares Amount Capital Earnings Shares Amount Total (In thousands, except shares) Balance at December 31, 1996 28,476,981 $ 94,828 $ 64,305 $ 191,541 --- $ --- $350,674 Net income --- --- --- 54,617 --- --- 54,617 Dividends on preferred stocks --- --- --- (782) --- --- (782) Dividends on common stock --- --- --- (32,653) --- --- (32,653) Issuance of common stock: Acquisitions 225,629 751 3,622 --- --- --- 4,373 Other 440,722 1,468 8,599 --- --- --- 10,067 Balance at December 31, 1997 29,143,332 97,047 76,526 212,723 --- --- 386,296 Net income --- --- --- 34,107 --- --- 34,107 Dividends on preferred stocks --- --- --- (777) --- --- (777) Dividends on common stock --- --- --- (40,470) --- --- (40,470) Issuance of common stock: Acquisitions (pre-split) 4,973,629 16,562 112,353 --- --- --- 128,915 Other (pre-split) 869,068 2,894 26,900 --- --- --- 29,794 Treasury stock acquired --- --- --- --- (159,681) (3,626) (3,626) Three-for-two common stock split (Note 7) 17,493,014 58,252 (58,252) --- (79,840) --- --- Issuance of common stock: Acquisitions (post-split) 672,863 2,241 11,234 --- --- --- 13,475 Other (post-split) 121,045 403 2,725 --- --- --- 3,128 Balance at December 31, 1998 53,272,951 177,399 171,486 205,583 (239,521) (3,626) 550,842 Net income --- --- --- 84,080 --- --- 84,080 Dividends on preferred stocks --- --- --- (772) --- --- (772) Dividends on common stock --- --- --- (45,322) --- --- (45,322) Reduction in par value of common stock --- (124,126) 124,126 --- --- --- --- Issuance of common stock: Acquisitions 3,882,390 3,882 73,639 --- --- --- 77,521 Other 122,574 123 3,061 --- --- --- 3,184 Balance at December 31, 1999 57,277,915 $ 57,278 $ 372,312 $243,569 (239,521) $(3,626) $669,533 <FN> The accompanying notes are an integral part of these consolidated statements. </FN> CONSOLIDATED STATEMENTS OF CASH FLOWS MDU RESOURCES GROUP, INC. Years ended December 31, 1999 1998 1997 (In thousands) Operating activities: Net income $ 84,080 $ 34,107 $ 54,617 Adjustments to reconcile net income to net cash provided by operating activities: Depreciation, depletion and amortization 81,818 77,786 65,767 Deferred income taxes and investment tax credit 15,704 (17,256) 12,894 Recovery of deferred natural gas contract litigation settlement costs --- --- 5,486 Write-downs of oil and natural gas properties (Note 1) --- 66,000 --- Changes in current assets and liabilities: Receivables (12,310) (10,464) 6,951 Inventories (13,460) 1,718 (4,214) Other current assets (4,190) (547) 2,026 Accounts payable 12,492 14,094 (5,605) Other current liabilities (8,972) (19,805) (6,087) Other noncurrent changes (289) (7,187) 6,794 Net cash provided by operating activities 154,873 138,446 138,629 Financing activities: Net change in short-term borrowings (6,585) 3,933 (5,919) Issuance of long-term debt 154,546 209,890 54,064 Repayment of long-term debt (18,714) (113,600) (47,899) Retirement of preferred stocks (100) (100) (100) Issuance of common stock 3,184 32,922 10,067 Retirement of natural gas repurchase commitment (14,296) (17,105) (52,090) Dividends paid (46,094) (41,247) (33,435) Net cash provided by (used in) financing activities 71,941 74,693 (75,312) Investing activities: Capital expenditures including acquisitions of businesses (170,510) (191,154) (112,224) Net proceeds from sale or disposition of property 16,660 4,275 4,522 Net capital expenditures (153,850) (186,879) (107,702) Sale of natural gas available under repurchase commitment 1,330 7,727 27,008 Investments (99) (22,945) (2,248) Additions to notes receivable (35,907) --- --- Net cash used in investing activities (188,526) (202,097) (82,942) Increase (decrease) in cash and cash equivalents 38,288 11,042 (19,625) Cash and cash equivalents -- beginning of year 39,216 28,174 47,799 Cash and cash equivalents -- end of year $ 77,504 $ 39,216 $ 28,174 The accompanying notes are an integral part of these consolidated statements. NOTE 1 SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Basis of presentation The consolidated financial statements of MDU Resources Group, Inc. and its subsidiaries (company) include the accounts of the following segments: electric, natural gas distribution, utility services, pipeline and energy services, oil and natural gas production, and construction materials and mining. The electric and natural gas distribution segments and a portion of the pipeline and energy services segment are regulated. The company's nonregulated operations include the utility services, oil and natural gas production, and construction materials and mining segments, and a portion of the pipeline and energy services segment. For further descriptions of the company's business segments see Note 9. The statements also include the ownership interests in the assets, liabilities and expenses of two jointly owned electric generation stations. The company's regulated businesses are subject to various state and federal agency regulation. The accounting policies followed by these businesses are generally subject to the Uniform System of Accounts of the Federal Energy Regulatory Commission (FERC). These accounting policies differ in some respects from those used by the company's nonregulated businesses. The company's regulated businesses account for certain income and expense items under the provisions of Statement of Financial Accounting Standards No. 71, "Accounting for the Effects of Regulation" (SFAS No. 71). SFAS No. 71 allows these businesses to defer as regulatory assets or liabilities certain items that would have otherwise been reflected as expense or income, respectively, based on the expected regulatory treatment in future rates. The expected recovery or flowback of these deferred items are generally based on specific ratemaking decisions or precedent for each item. Regulatory assets and liabilities are being amortized consistently with the regulatory treatment established by the FERC and the applicable state public service commissions. See Note 2 for more information regarding the nature and amounts of these regulatory deferrals. In accordance with the provisions of SFAS No. 71, intercompany coal sales, which are made at prices approximately the same as those charged to others, and the related utility fuel purchases are not eliminated. All other significant intercompany balances and transactions have been eliminated. Property, plant and equipment Additions to property, plant and equipment are recorded at cost when first placed in service. When regulated assets are retired, or otherwise disposed of in the ordinary course of business, the original cost and cost of removal, less salvage, is charged to accumulated depreciation. With respect to the retirement or disposal of all other assets, except for oil and natural gas production properties as described below, the resulting gains or losses are recognized as a component of income. The company is permitted to capitalize an allowance for funds used during construction (AFUDC) on regulated construction projects and to include such amounts in rate base when the related facilities are placed in service. In addition, the company capitalizes interest, when applicable, on certain construction projects associated with its other operations. The amount of AFUDC and interest capitalized was $1.7 million, $1.4 million and $970,000 in 1999, 1998 and 1997, respectively. Property, plant and equipment are depreciated on a straight-line basis over the average useful lives of the assets, except for oil and natural gas production properties as described below. In accordance with the provisions of Statement of Financial Accounting Standards No. 121, "Accounting for the Impairment of Long-Lived Assets and for Long-Lived Assets to be Disposed Of," the company reviews the carrying values of its long-lived assets whenever events or changes in circumstances indicate that such carrying values may not be recoverable. As yet, no asset or group of assets has been identified for which the sum of expected future cash flows (undiscounted and without interest charges) is less than the carrying amount of the asset(s) and, accordingly, no impairment losses have been recorded. However, currently unforeseen events and changes in circumstances could require the recognition of impairment losses at some future date. Oil and natural gas The company uses the full-cost method of accounting for its oil and natural gas production activities. Under this method, all costs incurred in the acquisition, exploration and development of oil and natural gas properties are capitalized and amortized on the units of production method based on total proved reserves. Any conveyances of properties, including gains or losses on abandonments of properties, are treated as adjustments to the cost of the properties with no gain or loss recognized. Capitalized costs are subject to a "ceiling test" that limits such costs to the aggregate of the present value of future net revenues of proved reserves and the lower of cost or fair value of unproved properties. Future net revenue is estimated based on end-of- quarter prices adjusted for contracted price changes. If capitalized costs exceed the full-cost ceiling at the end of any quarter, a permanent noncash write-down is required to be charged to earnings in that quarter. Due to low oil and natural gas prices, the company's capitalized costs under the full-cost method of accounting exceeded the full-cost ceiling at June 30, 1998 and December 31, 1998. Accordingly, the company was required to write down its oil and natural gas producing properties. These noncash write-downs amounted to $33.1 million ($20.0 million after tax) and $32.9 million ($19.9 million after tax) for the quarters ended June 30, 1998 and December 31, 1998, respectively. Natural gas in underground storage Natural gas in underground storage for the company's regulated operations is carried at cost using the last-in, first-out method. The portion of the cost of natural gas in underground storage expected to be used within one year is included in inventories and amounted to $26.1 million and $11.5 million at December 31, 1999 and 1998, respectively. The remainder of natural gas in underground storage is included in property, plant and equipment and was $46.8 million and $43.7 million at December 31, 1999 and 1998, respectively. Inventories Inventories, other than natural gas in underground storage for the company's regulated operations, consist primarily of materials and supplies and inventories held for resale. These inventories are stated at the lower of average cost or market. Revenue recognition The company recognizes utility revenue each month based on the services provided to all utility customers during the month. For its construction businesses, the company recognizes construction contract revenue on the percentage of completion method. The company generally recognizes all other revenues when services are rendered or goods are delivered. Natural gas costs recoverable through rate adjustments Under the terms of certain orders of the applicable state public service commissions, the company is deferring natural gas commodity, transportation and storage costs which are greater or less than amounts presently being recovered through its existing rate schedules. Such orders generally provide that these amounts are recoverable or refundable through rate adjustments within 24 months from the time such costs are paid. Income taxes The company provides deferred federal and state income taxes on all temporary differences. Excess deferred income tax balances associated with the company's rate-regulated activities resulting from the company's adoption of SFAS No. 109, "Accounting for Income Taxes," have been recorded as a regulatory liability and are included in "Other liabilities" in the company's Consolidated Balance Sheets. These regulatory liabilities are expected to be reflected as a reduction in future rates charged customers in accordance with applicable regulatory procedures. The company uses the deferral method of accounting for investment tax credits and amortizes the credits on electric and natural gas distribution plant over various periods which conform to the ratemaking treatment prescribed by the applicable state public service commissions. Earnings per common share Basic earnings per common share were computed by dividing earnings on common stock by the weighted average number of shares of common stock outstanding during the year. Diluted earnings per common share were computed by dividing earnings on common stock by the total of the weighted average number of shares of common stock outstanding during the year, plus the effect of outstanding stock options. Common stock outstanding includes issued shares less shares held in treasury. Earnings per common share reflect the three-for-two common stock split effected in July 1998 as discussed in Note 7. Comprehensive income For the years ended December 31, 1999, 1998 and 1997, comprehensive income equaled net income as reported. Use of estimates The preparation of financial statements in conformity with generally accepted accounting principles requires the company to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Estimates are used for such items as property depreciable lives, tax provisions, uncollectible accounts, environmental and other loss contingencies, accumulated provision for revenues subject to refund, unbilled revenues and actuarially determined benefit costs. As better information becomes available, or actual amounts are determinable, the recorded estimates are revised. Consequently, operating results can be affected by revisions to prior accounting estimates. Cash flow information Cash expenditures for interest and income taxes were as follows: Years ended December 31, 1999 1998 1997 (In thousands) Interest, net of amount capitalized $30,772 $26,394 $25,626 Income taxes $32,723 $34,498 $18,171 The company considers all highly liquid investments purchased with an original maturity of three months or less to be cash equivalents. Reclassifications Certain reclassifications have been made in the financial statements for prior years to conform to the current presentation. Such reclassifications had no effect on net income or common stockholders' equity as previously reported. New accounting pronouncements In June 1998, the Financial Accounting Standards Board (FASB) issued Statement of Financial Accounting Standards No. 133, "Accounting for Derivative Instruments and Hedging Activities" (SFAS No. 133). SFAS No. 133 establishes accounting and reporting standards requiring that every derivative instrument (including certain derivative instruments embedded in other contracts) be recorded in the balance sheet as either an asset or liability measured at its fair value. SFAS No. 133 requires that changes in the derivative's fair value be recognized currently in earnings unless specific hedge accounting criteria are met. Special accounting for qualifying hedges allows a derivative's gains and losses to offset the related results on the hedged item in the income statement, and requires that a company must formally document, designate and assess the effectiveness of transactions that receive hedge accounting treatment. In June 1999, the FASB issued Statement of Financial Accounting Standards No. 137, "Accounting for Derivative Instruments and Hedging Activities -- Deferral of the Effective Date of FASB Statement No. 133," which delayed the effective date of SFAS No. 133 to fiscal years beginning after June 15, 2000. The company will adopt SFAS No. 133 on January 1, 2001. The company continues to evaluate the effect of adopting SFAS No. 133 but has not yet determined what impact this adoption will have on the company's financial position or results of operations. In December 1999, the Securities and Exchange Commission issued Staff Accounting Bulletin No. 101, "Revenue Recognition" (SAB No. 101), which provides guidance on the recognition, presentation and disclosure of revenue in financial statements. SAB No. 101 is effective for the first fiscal quarter of the fiscal year beginning after December 15, 1999. SAB No. 101 is not expected to have a material effect on the company's financial position or results of operations. NOTE 2 REGULATORY ASSETS AND LIABILITIES The following table summarizes the individual components of unamortized regulatory assets and liabilities included in the accompanying Consolidated Balance Sheets as of December 31: 1999 1998 (In thousands) Regulatory assets: Long-term debt refinancing costs $ 9,514 $ 10,995 Deferred income taxes 7,274 13,364 Natural gas contract settlement and restructuring costs 3,000 --- Postretirement benefit costs 1,742 2,036 Plant costs 2,835 3,004 Other 6,789 6,063 Total regulatory assets 31,154 35,462 Regulatory liabilities: Reserves for regulatory matters 24,231 39,981 Taxes refundable to customers 11,504 14,130 Plant decommissioning costs 6,989 6,413 Deferred income taxes 6,785 7,047 Natural gas costs refundable through rate adjustments 2,579 274 Other 710 157 Total regulatory liabilities 52,798 68,002 Net regulatory position $(21,644) $ (32,540) As of December 31, 1999, substantially all of the company's regulatory assets are being reflected in rates charged to customers and are being recovered over the next 1 to 17 years. If, for any reason, the company's regulated businesses cease to meet the criteria for application of SFAS No. 71 for all or part of their operations, the regulatory assets and liabilities relating to those portions ceasing to meet such criteria would be removed from the balance sheet and included in the statement of income as an extraordinary item in the period in which the discontinuance of SFAS No. 71 occurs. NOTE 3 FINANCIAL INSTRUMENTS Derivatives From time to time, the company utilizes derivative financial instruments, including price swap and collar agreements and natural gas futures, to manage a portion of the market risk associated with fluctuations in the price of oil and natural gas. The company's policy prohibits the use of derivative instruments for trading purposes and the company has procedures in place to monitor compliance with its policies. The company is exposed to credit-related losses in relation to financial instruments in the event of nonperformance by counterparties, but does not expect any counterparties to fail to meet their obligations given their existing credit ratings. The swap and collar agreements call for the company to receive monthly payments from or make payments to counterparties based upon the difference between a fixed and a variable price as specified by the agreements. The variable price is either an oil price quoted on the New York Mercantile Exchange (NYMEX) or a quoted natural gas price on the NYMEX, Colorado Interstate Gas Index or Williams Gas Index. The company believes that there is a high degree of correlation because the timing of purchases and production and the swap and collar agreements are closely matched, and hedge prices are established in the areas of operations. Amounts payable or receivable on the swap and collar agreements are matched and reported in operating revenues on the Consolidated Statements of Income as a component of the related commodity transaction at the time of settlement with the counterparty. Gains or losses on futures contracts are deferred until the underlying commodity transaction occurs, at which point they are reported in "Purchased natural gas sold" on the Consolidated Statements of Income. The following table summarizes hedge agreements entered into by Fidelity Oil Co. and WBI Production, Inc., indirect wholly owned subsidiaries of the company, as of December 31, 1999. These agreements call for Fidelity Oil Co. and WBI Production, Inc. to receive fixed prices and pay variable prices. (Notional amount and fair value in thousands) Weighted Average Notional Fixed Price Amount Fair (Per barrel) (In barrels) Value Oil swap agreements maturing in 2000 $19.55 769 $(1,870) Weighted Average Notional Fixed Price Amount Fair (Per MMBtu) (In MMBtu's) Value Natural gas swap agreements maturing in 2000 $2.33 5,307 $ 597 Weighted Average Floor/Ceiling Notional Price Amount Fair (Per barrel) (In barrels) Value Oil collar agreement maturing in 2000 $20.00/$22.33 183 $ (134) Weighted Average Floor/Ceiling Notional Price Amount Fair (Per MMBtu) (In MMBtu's) Value Natural gas collar agreements maturing in 2000 $2.34/$2.68 3,196 $ 112 At December 31, 1998, Fidelity Oil Co. had natural gas collar agreements outstanding for 2.9 million MMBtu's of natural gas with a weighted average floor price and ceiling price of $2.10 and $2.51, respectively. The company's net favorable position on the natural gas collar agreements outstanding at December 31, 1998, was $597,000. These agreements call for Fidelity Oil Co. to receive fixed prices and pay variable prices. The fair value of these derivative financial instruments reflects the estimated amounts that the company would receive or pay to terminate the contracts at the reporting date, thereby taking into account the current favorable or unfavorable position on open contracts. The favorable or unfavorable position is currently not recorded on the company's financial statements. Favorable and unfavorable positions related to commodity hedge agreements are expected to be generally offset by corresponding increases and decreases in the value of the underlying commodity transactions. In the event a derivative financial instrument does not qualify for hedge accounting or when the underlying commodity transaction matures, is sold, is extinguished, or is terminated, the current favorable or unfavorable position on the open contract would be included in results of operations. The company's policy requires approval to terminate a hedge agreement prior to its original maturity. In the event a hedge agreement is terminated, the realized gain or loss at the time of termination would be deferred until the underlying commodity transaction is sold or matures and is expected to generally offset the corresponding increases or decreases in the value of the underlying commodity transaction. Fair value of other financial instruments The estimated fair value of the company's long-term debt and preferred stock subject to mandatory redemption is based on quoted market prices of the same or similar issues. The estimated fair value of the company's long-term debt and preferred stock subject to mandatory redemption at December 31 is as follows: 1999 1998 Carrying Fair Carrying Fair Amount Value Amount Value (In thousands) Long-term debt $567,873 $555,730 $416,456 $435,078 Preferred stock subject to mandatory redemption $ 1,600 $ 1,418 $ 1,700 $ 1,592 The fair value of other financial instruments for which estimated fair value has not been presented is not materially different than the related carrying amount. NOTE 4 SHORT-TERM BORROWINGS The company and its subsidiaries had unsecured short-term lines of credit from a number of banks totaling $81.9 million at December 31, 1999. These line of credit agreements provide for bank borrowings against the lines and/or support for commercial paper issues. The agreements provide for commitment fees at varying rates. Amounts outstanding on the short-term lines of credit were $14.7 million at December 31, 1999, and $15 million at December 31, 1998. The weighted average interest rate for borrowings outstanding at December 31, 1999 and 1998, was 6.97 percent and 5.45 percent, respectively. The unused portions of the lines of credit are subject to withdrawal based on the occurrence of certain events. NOTE 5 LONG-TERM DEBT AND INDENTURE PROVISIONS Long-term debt outstanding at December 31 is as follows: 1999 1998 (In thousands) First mortgage bonds and notes: Pollution Control Refunding Revenue Bonds, Series 1992, 6.65%, due June 1, 2022 $ 20,850 $ 20,850 Secured Medium-Term Notes, Series A at a weighted average rate of 7.59%, due on dates ranging from October 1, 2004 to April 1, 2012 110,000 110,000 Total first mortgage bonds and notes 130,850 130,850 Pollution control note obligation, 6.20%, due March 1, 2004 3,100 3,400 Senior notes at a weighted average rate of 7.19%, due on dates ranging from December 31, 2000 to October 30, 2018 151,400 141,000 Commercial paper at a weighted average rate of 6.80%, supported by a revolving credit agreement due on September 1, 2002 223,169 82,921 Revolving lines of credit at a weighted average rate of 8.37%, due on dates ranging from November 1, 2001 through December 31, 2002 45,900 45,200 Term credit agreements at a weighted average rate of 7.52%, due on dates ranging from January 1, 2000 through November 25, 2012 13,970 13,211 Other (516) (126) Total long-term debt 567,873 416,456 Less current maturities 4,328 3,192 Net long-term debt $ 563,545 $413,264 Centennial Energy Holdings, Inc., a direct wholly owned subsidiary of the company, has a revolving credit agreement with various banks on behalf of its subsidiaries that allows for borrowings of up to $240 million. This facility supports the Centennial commercial paper program. Under the Centennial commercial paper program, $223.2 million and $82.9 million were outstanding at December 31, 1999 and 1998, respectively. The commercial paper borrowings are classified as long term as the company intends to refinance these borrowings on a long term basis through continued commercial paper borrowings supported by the revolving credit agreement due September 1, 2002. The company intends to renew this existing credit agreement on an annual basis. Effective December 27, 1999, Centennial entered into an uncommitted long-term master shelf agreement with The Prudential Insurance Company of America on behalf of its subsidiaries that allows for borrowings of up to $200 million, none of which was outstanding at December 31, 1999. Under the revolving lines of credit, the company and certain subsidiaries have $58.2 million available as of December 31, 1999. Amounts outstanding under the revolving lines of credit were $45.9 million and $45.2 million at December 31, 1999 and 1998, respectively. The amounts of scheduled long-term debt maturities for the five years following December 31, 1999 aggregate $4.3 million in 2000; $24.6 million in 2001; $272.3 million in 2002; $6.6 million in 2003 and $21.6 million in 2004. Substantially all of the company's electric and natural gas distribution properties, with certain exceptions, are subject to the lien of its Indenture of Mortgage. Under the terms and conditions of the Indenture, the company could have issued approximately $287 million of additional first mortgage bonds at December 31, 1999. Certain other debt instruments of the company and its subsidiaries contain restrictive covenants, all of which the company and its subsidiaries are in compliance with at December 31, 1999. NOTE 6 PREFERRED STOCKS Preferred stocks at December 31 are as follows: 1999 1998 (Dollars in thousands) Authorized: Preferred -- 500,000 shares, cumulative, par value $100, issuable in series Preferred stock A -- 1,000,000 shares, cumulative, without par value, issuable in series (none outstanding) Preference -- 500,000 shares, cumulative, without par value, issuable in series (none outstanding) Outstanding: Subject to mandatory redemption -- Preferred -- 5.10% Series -- 16,000 shares in 1999 and 17,000 shares in 1998 $ 1,600 $ 1,700 Other preferred stock -- 4.50% Series -- 100,000 shares 10,000 10,000 4.70% Series -- 50,000 shares 5,000 5,000 15,000 15,000 Total preferred stocks 16,600 16,700 Less sinking fund requirements 100 100 Net preferred stocks $16,500 $16,600 The preferred stocks outstanding are subject to redemption, in whole or in part, at the option of the company with certain limitations on 30 days notice on any quarterly dividend date. The company is obligated to make annual sinking fund contributions to retire the 5.10% Series preferred stock. The redemption prices and sinking fund requirements, where applicable, are summarized below: Redemption Sinking Fund Series Price (a) Shares Price (a) Preferred stocks: 4.50% $105 (b) --- --- 4.70% $102 (b) --- --- 5.10% $102 1,000 (c) $100 (a) Plus accrued dividends. (b) These series are redeemable at the sole discretion of the company. (c) Annually on December 1, if tendered. In the event of a voluntary or involuntary liquidation, all preferred stock series holders are entitled to $100 per share, plus accrued dividends. The aggregate annual sinking fund amount applicable to preferred stock subject to mandatory redemption for each of the five years following December 31, 1999, is $100,000. NOTE 7 COMMON STOCK At the Annual Meeting of Stockholders held on April 27, 1999, the company's common stockholders approved an amendment to the Certificate of Incorporation increasing the authorized number of common shares from 75 million shares to 150 million shares and reducing the par value of the common stock from $3.33 per share to $1.00 per share. In May 1998, the company's Board of Directors approved a three-for-two common stock split effected in the form of a 50 percent common stock dividend. The additional shares of common stock were distributed on July 13, 1998, to common stockholders of record on July 3, 1998. Common stock information appearing in the accompanying Consolidated Statements of Income and Notes to Consolidated Financial Statements give retroactive effect to the stock split. The company's Automatic Dividend Reinvestment and Stock Purchase Plan (DRIP) provides participants in the DRIP the opportunity to invest all or a portion of their cash dividends in shares of the company's common stock and to make optional cash payments of up to $5,000 per month for the same purpose. Holders of all classes of the company's capital stock, legal residents in any of the 50 states, and beneficial owners, whose shares are held by brokers or other nominees through participation by their brokers or nominees, are eligible to participate in the DRIP. The company's Tax Deferred Compensation Savings Plan(s) (K-Plan(s)), which were merged effective January 1, 1999, pursuant to Section 401(k) of the Internal Revenue Code are funded with the company's common stock. Since January 1, 1989, the DRIP and K-Plan(s) have been funded primarily by the purchase of shares of common stock on the open market, except for a portion of 1997 where shares of authorized but unissued common stock were used to fund the DRIP and K-Plan(s) and from October 1, 1998 through March 31, 1999, when shares of authorized but unissued common stock were used to fund the DRIP. At December 31, 1999, there were 8.1 million shares of common stock reserved for original issuance under the DRIP and K-Plan. In November 1998, the company's Board of Directors declared, pursuant to a stockholders' rights plan, a dividend of one preference share purchase right (right) for each outstanding share of the company's common stock. Each right becomes exercisable, upon the occurrence of certain events, for one one-thousandth of a share of Series B Preference Stock of the company, without par value, at an exercise price of $125 per one one-thousandth, subject to certain adjustments. The rights are currently not exercisable and will be exercisable only if a person or group (acquiring person) either acquires ownership of 15 percent or more of the company's common stock or commences a tender or exchange offer that would result in ownership of 15 percent or more. In the event the company is acquired in a merger or other business combination transaction or 50 percent or more of its consolidated assets or earnings power are sold, each right entitles the holder to receive, upon the exercise thereof at the then current exercise price of the right multiplied by the number of one one-thousandth of a Series B Preference Stock for which a right is then exercisable, in accordance with the terms of the rights agreement, such number of shares of common stock of the acquiring person having a market value of twice the then current exercise price of the right. The rights, which expire on December 31, 2008, are redeemable in whole, but not in part, for a price of $.01 per right, at the company's option at any time until any acquiring person has acquired 15 percent or more of the company's common stock. The company has stock option plans for directors, key employees and employees, which grant options to purchase shares of the company's stock. The company accounts for these option plans in accordance with APB Opinion No. 25 under which no compensation expense has been recognized. The option exercise price is the market value of the stock on the date of grant. Options granted to the key employees automatically vest after nine years, but the plan provides for accelerated vesting based on the attainment of certain performance goals or upon a change in control of the company. Options granted to directors and employees vest at date of grant and three years after date of grant, respectively, and expire ten years after the date of grant. Under the stock option plans, the company is authorized to grant options for up to 4.3 million shares of common stock and has granted options on 1.9 million shares through December 31, 1999. Had the company recorded compensation expense for the fair value of options granted consistent with SFAS No. 123, "Accounting for Stock- Based Compensation" (SFAS No. 123), net income would have been reduced on a pro forma basis by $498,000 in 1999, $820,000 in 1998 and $51,400 in 1997. On a pro forma basis, basic and diluted earnings per share for 1999 and 1998 would have been reduced by $.01 and $.02, respectively, and there would have been no effect for 1997. Since SFAS No. 123 does not require this accounting to be applied to options granted prior to January 1, 1995, the resulting pro forma compensation costs may not be representative of those to be expected in future years. A summary of the status of the stock option plans at December 31, 1999, 1998 and 1997, and changes during the years then ended are as follows: 1999 1998 1997 Weighted Weighted Weighted Average Average Average Exercise Exercise Exercise Shares Price Shares Price Shares Price Balance at beginning of year 1,516,808 $19.17 594,180 $12.07 635,965 $11.77 Granted 22,500 23.31 1,225,920 21.12 22,500 16.37 Forfeited (57,966) 20.38 (37,875) 21.05 (13,600) 11.41 Exercised (54,080) 11.95 (265,417) 11.98 (50,685) 10.50 Balance at end of year 1,427,262 19.46 1,516,808 19.17 594,180 12.07 Exercisable at end of year 301,681 $13.89 333,261 $12.94 112,461 $11.67 Exercise prices on options outstanding at December 31, 1999, range from $10.50 to $23.84 with a weighted average remaining contractual life of approximately 8 years. The fair value of each option is estimated on the date of grant using the Black-Scholes option pricing model. The weighted average fair value of the options granted and the assumptions used to estimate the fair value of options are as follows: 1999 1998 1997 Fair value of options at grant date $ 4.82 $ 2.40 $ 2.09 Weighted average risk-free interest rate 5.98% 4.78% 6.60% Weighted average expected price volatility 22.03% 16.27% 14.51% Weighted average expected dividend yield 4.22% 5.13% 5.48% Expected life in years 7 7 7 NOTE 8 INCOME TAXES Income tax expense is summarized as follows: Years ended December 31, 1999 1998 1997 (In thousands) Current: Federal $29,574 $ 28,256 $15,427 State 3,874 5,880 2,362 Foreign 158 605 60 33,606 34,741 17,849 Deferred: Investment tax credit (888) (975) (1,150) Income taxes -- Federal 12,902 (14,214) 11,844 State 3,690 (2,067) 2,200 15,704 (17,256) 12,894 Total income tax expense $49,310 $ 17,485 $30,743 Components of deferred tax assets and deferred tax liabilities recognized in the company's Consolidated Balance Sheets at December 31 are as follows: 1999 1998 (In thousands) Deferred tax assets: Regulatory matters $ 14,562 $ 22,319 Accrued pension costs 10,898 9,274 Deferred investment tax credits 2,028 2,336 Accrued land reclamation 2,803 2,907 Other 16,892 17,572 Total deferred tax assets 47,183 54,408 Deferred tax liabilities: Depreciation and basis differences on property, plant and equipment 218,355 188,375 Basis differences on oil and natural gas producing properties 17,163 9,604 Regulatory matters 6,785 7,047 Other 3,051 5,558 Total deferred tax liabilities 245,354 210,584 Net deferred income tax liability $(198,171)$(156,176) The following table reconciles the change in the net deferred income tax liability from December 31, 1998, to December 31, 1999, to the deferred income tax expense included in the Consolidated Statements of Income: 1999 (In thousands) Net change in deferred income tax liability from the preceding table $ 41,995 Change in tax effects of income tax-related regulatory assets and liabilities (4,293) Deferred taxes associated with acquisitions (21,110) Deferred income tax expense for the period $ 16,592 Total income tax expense differs from the amount computed by applying the statutory federal income tax rate to income before taxes. The reasons for this difference are as follows: Years ended December 31, 1999 1998 1997 Amount % Amount % Amount % (Dollars in thousands) Computed tax at federal statutory rate $46,686 35.0 $18,057 35.0 $29,876 35.0 Increases (reductions) resulting from: Depletion allowance (1,300) (1.0) (1,571) (3.0) (828) (1.0) State income taxes -- net of federal income tax benefit 5,921 4.4 2,312 4.5 3,473 4.1 Investment tax credit amortization (888) (.6) (975) (1.9) (1,150) (1.4) Other items (1,109) (.8) (338) (.7) (628) (.7) Total income tax expense $49,310 37.0 $17,485 33.9 $30,743 36.0 NOTE 9 BUSINESS SEGMENT DATA The company's reportable segments are those that are based on the company's method of internal reporting, which generally segregates the strategic business units due to differences in products, services and regulation. Prior to the fourth quarter of 1999, the company reported five operating segments consisting of electric, natural gas distribution, natural gas transmission, construction materials and mining, and oil and natural gas production. During the fourth quarter of 1999, the company revised the components of the segments reported based on organizational changes and the significance of current segments. As a result, a utility services segment was separated from the electric segment; gas production activities previously included in the natural gas transmission segment are now reflected in the oil and natural gas production segment; and the remaining operations of the natural gas transmission business were renamed pipeline and energy services. The company's operations are now conducted through six business segments and all prior period information has been restated to reflect this change. As of December 31, 1999, all of the company's operations are located within the United States. The electric business generates, transmits and distributes electricity and the natural gas distribution business distributes natural gas, and these operations also supply related value-added products and services in the Northern Great Plains. The utility services business is a full-service engineering, design and build company operating in the western United States specializing in construction and maintenance of power and natural gas distribution and transmission systems as well as communication and fiber optic facilities. The pipeline and energy services business provides natural gas transportation, underground storage and gathering services through regulated and nonregulated pipeline systems and provides energy marketing and management services throughout the United States. The oil and natural gas production business is engaged in oil and natural gas acquisition, exploration and production throughout the United States and in the Gulf of Mexico. The construction materials and mining business mines and markets aggregates and related value-added construction materials products and services in the western United States, including Alaska and Hawaii. It also operates lignite coal mines in Montana and North Dakota. Segment information follows the same accounting policies as described in the Summary of Significant Accounting Policies. Segment information included in the accompanying Consolidated Balance Sheets as of December 31 and included in the Consolidated Statements of Income for the years then ended is as follows: 1999 1998 1997 (In thousands) Operating revenues - external: Electric $ 154,869 $ 147,221 $ 141,590 Natural gas distribution 157,692 154,147 157,005 Utility services 99,917 64,232 22,761 Pipeline and energy services 334,188 132,826 36,999 Oil and natural gas production 63,238 51,750 75,172 Construction materials and mining 455,939 331,988 163,006 Total operating revenues - external $1,265,843 $ 882,164 $ 596,533 Operating revenues - intersegment: Electric $ --- $ --- $ --- Natural gas distribution --- --- --- Utility services --- --- --- Pipeline and energy services 49,344 47,906 50,019 Oil and natural gas production 15,156 10,092 2,744 Construction materials and mining(a) 13,966 14,463 11,141 Intersegment eliminations (64,500) (57,998) (52,763) Total operating revenues - intersegment(a) $ 13,966 $ 14,463 $ 11,141 Depreciation, depletion and amortization: Electric $ 18,375 $ 18,129 $ 17,491 Natural gas distribution 7,348 7,150 7,013 Utility services 2,591 1,669 280 Pipeline and energy services 8,248 6,972 4,888 Oil and natural gas production 19,248 23,304 25,096 Construction materials and mining 26,008 20,562 10,999 Total depreciation, depletion and amortization $ 81,818 $ 77,786 $ 65,767 Interest expense: Electric $ 9,692 $ 9,979 $ 10,735 Natural gas distribution 3,614 3,728 3,698 Utility services 812 325 214 Pipeline and energy services 7,281 5,800 8,117 Oil and natural gas production 3,405 3,039 2,942 Construction materials and mining 11,202 7,402 4,503 Total interest expense $ 36,006 $ 30,273 $ 30,209 Income taxes: Electric $ 8,678 $ 7,767 $ 7,011 Natural gas distribution 1,443 2,681 2,987 Utility services 4,323 2,437 631 Pipeline and energy services 13,356 12,579 7,566 Oil and natural gas production 10,032 (23,134) 8,156 Construction materials and mining 11,478 15,155 4,392 Total income taxes $ 49,310 $ 17,485 $ 30,743 Earnings on common stock: Electric $ 15,973 $ 13,908 $ 12,441 Natural gas distribution 3,192 3,501 4,514 Utility services 6,505 3,272 947 Pipeline and energy services 20,972 18,651 9,955 Oil and natural gas production 16,207 (30,501)(b) 15,867 Construction materials and mining 20,459 24,499 10,111 Total earnings on common stock $ 83,308 $ 33,330 $ 53,835 Capital expenditures: Electric $ 18,218 $ 13,035 $ 18,363 Natural gas distribution 9,246 8,256 8,858 Utility services 16,052 18,343 9,607 Pipeline and energy services 35,123 17,603 9,684 Oil and natural gas production 64,294 100,572 34,172 Construction materials and mining 105,098 172,108 41,472 Net proceeds from sale or disposition of property (16,660) (4,275) (4,522) Total net capital expenditures $ 231,371 $ 325,642 $ 117,634 Identifiable assets: Electric(c) $ 307,417 $ 305,627 Natural gas distribution(c) 131,294 129,654 Utility services 67,755 38,677 Pipeline and energy services 302,587 239,507 Oil and natural gas production 255,416 192,642 Construction materials and mining 655,499 500,720 Corporate assets(d) 46,335 45,948 Total identifiable assets $1,766,303 $1,452,775 Property, plant and equipment: Electric $ 581,090 $ 567,282 Natural gas distribution 185,797 178,522 Utility services 21,876 15,765 Pipeline and energy services 308,409 276,325 Oil and natural gas production 343,157 288,487 Construction materials and mining 601,952 484,419 Less accumulated depreciation, depletion and amortization 794,105 726,123 Net property, plant and equipment $1,248,176 $1,084,677 (a) In accordance with the provision of SFAS No. 71, intercompany coal sales are not eliminated. (b) Reflects $39.9 million in noncash after-tax write- downs of oil and natural gas properties. (c) Includes, in the case of electric and natural gas distribution property, allocations of common utility property. (d) Corporate assets consist of assets not directly assignable to a business segment (i.e., cash and cash equivalents, certain accounts receivable and other miscellaneous current and deferred assets). Capital expenditures for 1999, 1998 and 1997, related to acquisitions, in the preceding table include the following noncash transactions: issuance of the company's equity securities in 1999 of $77.5 million; issuance of the company's equity securities, less treasury stock acquired, in 1998 of $138.8 million; and assumed debt and the issuance of the company's equity securities in total for 1997 of $9.9 million. NOTE 10 ACQUISITIONS In 1999, the company acquired a number of businesses, none of which were individually material, including construction materials and mining companies with operations in California, Montana, Oregon and Wyoming and utility services companies based in Montana and Oregon. The total purchase consideration for these businesses, consisting of the company's common stock and cash, was $81.9 million. In March 1998, the company acquired Morse Bros., Inc. and S2 - F Corp., privately held construction materials companies located in Oregon's Willamette Valley. The purchase consideration for such companies consisted of $98.2 million of the company's common stock and cash. Morse Bros., Inc. sells aggregate, ready-mixed concrete, asphalt, prestressed concrete and construction services in the Willamette Valley from Portland to Eugene. S2 - F Corp. sells aggregate and construction services. The company also acquired a number of other businesses in 1998, none of which were individually material, including construction materials and mining businesses in Oregon, utility services construction and engineering businesses in California and Montana and a natural gas marketing business in Kentucky. The total purchase consideration, consisting of the company's common stock and cash, for these businesses was $62.7 million. In 1997, the company acquired several businesses, none of which were individually material, including the remaining 50 percent interest in Hawaiian Cement (See Note 12) and utility services construction and construction supplies and equipment businesses in Oregon. The total purchase consideration, consisting of the company's common stock and cash, for these businesses was $35.2 million. The above acquisitions were accounted for under the purchase method of accounting and accordingly, the acquired assets and liabilities assumed have been recorded at their respective fair values as of the date of acquisition. The results of operations of the acquired businesses are included in the financial statements since the date of each acquisition. Pro forma financial amounts reflecting the effects of the above acquisitions are not presented as such acquisitions were not material to the company's financial position or results of operations. NOTE 11 EMPLOYEE BENEFIT PLANS The company has noncontributory defined benefit pension plans and other postretirement benefit plans. There were no additional minimum pension liabilities required to be recognized as of December 31, 1999 and 1998. Changes in benefit obligation and plan assets for the years ended December 31 are as follows: Other Pension Postretirement Benefits Benefits 1999 1998 1999 1998 (In thousands) Change in benefit obligation: Benefit obligation at beginning of year $187,665 $178,199 $70,338 $ 73,838 Service cost 4,894 4,509 1,451 1,502 Interest cost 12,573 12,248 4,720 4,848 Plan participants' contributions --- --- 617 475 Amendments 3,612 437 3,691 (4,810) Actuarial (gain) loss (17,134) 5,971 (11,047) (1,695) Benefits paid (10,613) (13,699) (3,831) (3,820) Benefit obligation at end of year 180,997 187,665 65,939 70,338 Change in plan assets: Fair value of plan assets at beginning of year 251,194 225,201 39,543 30,595 Actual return on plan assets 35,874 39,604 5,223 6,226 Employer contribution 4 88 5,595 6,067 Plan participants' contributions --- --- 617 475 Benefits paid (10,613) (13,699) (3,831) (3,820) Fair value of plan assets at end of year 276,459 251,194 47,147 39,543 Funded status 95,462 63,529 (18,792) (30,795) Unrecognized actuarial gain (108,593) (73,963) (21,299) (8,036) Unrecognized prior service cost 10,206 7,645 --- (1,433) Unrecognized net transition obligation (asset) (4,402) (5,340) 30,910 31,029 Accrued benefit cost $ (7,327) $ (8,129) $(9,181) $ (9,235) Weighted average assumptions for the company's pension and other postretirement benefit plans as of December 31 are as follows: Other Pension Postretirement Benefits Benefits 1999 1998 1999 1998 Discount rate 7.75% 6.75% 7.75% 6.75% Expected return on plan assets 8.50% 8.50% 7.50% 7.50% Rate of compensation increase 5.00% 4.50% 5.00% 4.50% Health care rate assumptions for the company's other postretirement benefit plans as of December 31 are as follows: 1999 1998 Health care trend rate 6.00%-8.00% 6.50%-8.50% Health care cost trend rate - ultimate 5.00%-6.00% 5.00%-6.00% Year in which ultimate trend rate achieved 1999-2004 1999-2004 Components of net periodic benefit cost for the company's pension and other postretirement benefit plans are as follows: Other Pension Postretirement Benefits Benefits Years ended December 31, 1999 1998 1997 1999 1998 1997 (In thousands) Components of net periodic benefit cost: Service cost $ 4,894 $ 4,509 $ 3,889 $1,451 $1,502 $1,272 Interest cost 12,573 12,248 11,651 4,720 4,848 4,691 Expected return on assets (17,489) (15,892) (14,321) (2,807) (2,395) (1,748) Amortization of prior service cost 842 848 811 --- --- --- Recognized net actuarial gain (995) (621) (666) (200) (169) (105) Amortization of net transition obligation (asset) (997) (994) (988) 2,377 2,458 2,458 Net periodic benefit cost (income) (1,172) 98 376 5,541 6,244 6,568 Less amount capitalized (87) 79 70 463 628 625 Net periodic benefit expense (income) $ (1,085) $ 19 $ 306 $5,078 $5,616 $5,943 The company has other postretirement benefit plans including health care and life insurance. The plans underlying these benefits may require contributions by the employee depending on such employee's age and years of service at retirement or the date of retirement. The accounting for the health care plan anticipates future cost-sharing changes that are consistent with the company's expressed intent to generally increase retiree contributions each year by the excess of the expected health care cost trend rate over 6 percent. Assumed health care cost trend rates may have a significant effect on the amounts reported for the health care plans. A one percentage point change in the assumed health care cost trend rates would have the following effects at December 31, 1999: 1 Percentage 1 Percentage Point Increase Point Decrease (In thousands) Effect on total of service and interest cost components $ 240 $ (217) Effect on postretirement benefit obligation $3,004 $(2,683) The company has an unfunded, nonqualified benefit plan for executive officers and certain key management employees that provides for defined benefit payments upon the employee's retirement or to their beneficiaries upon death for a 15-year period. Investments consist of life insurance carried on plan participants which is payable to the company upon the employee's death. The cost of these benefits was $3.3 million, $2.7 million and $2.2 million in 1999, 1998 and 1997, respectively. The company sponsors various defined contribution plans for eligible employees. Costs incurred by the company under these plans were $4.4 million in 1999, $3.1 million in 1998 and $2.1 million in 1997. The costs incurred in each year reflect additional participants as a result of business acquisitions. NOTE 12 PARTNERSHIP INVESTMENT In September 1995, KRC Holdings, Inc., through its wholly owned subsidiary, Knife River Hawaii, Inc., acquired a 50 percent interest in Hawaiian Cement, which was previously owned by Lone Star Industries, Inc. Knife River Dakota, Inc., a wholly owned subsidiary of KRC Holdings, Inc. acquired the remaining 50 percent interest in Hawaiian Cement from the previous owner, Adelaide Brighton Cement (Hawaii), Inc. of Adelaide, Australia, in July 1997. In August 1997, the company began consolidating Hawaiian Cement into its financial statements. Prior to August 1997, the company's net investment in Hawaiian Cement was not consolidated and was accounted for by the equity method. The company's share of operating results for the seven months ended July 31, 1997, is included in "Other income -- net" in the accompanying Consolidated Statements of Income for the year ended December 31, 1997. Summarized operating results for Hawaiian Cement for the seven months ended July 31, 1997, when accounted for by the equity method, are as follows: net sales of $33.5 million, operating margin of $4.7 million and income before income taxes of $2.0 million. NOTE 13 JOINTLY OWNED FACILITIES The consolidated financial statements include the company's 22.7 percent and 25.0 percent ownership interests in the assets, liabilities and expenses of the Big Stone Station and the Coyote Station, respectively. Each owner of the Big Stone and Coyote stations is responsible for financing its investment in the jointly owned facilities. The company's share of the Big Stone Station and Coyote Station operating expenses is reflected in the appropriate categories of operating expenses in the Consolidated Statements of Income. At December 31, the company's share of the cost of utility plant in service and related accumulated depreciation for the stations was as follows: 1999 1998 (In thousands) Big Stone Station: Utility plant in service $ 49,889 $ 49,762 Less accumulated depreciation 29,611 28,781 $ 20,278 $ 20,981 Coyote Station: Utility plant in service $121,919 $121,726 Less accumulated depreciation 60,350 56,770 $ 61,569 $ 64,956 NOTE 14 REGULATORY MATTERS AND REVENUES SUBJECT TO REFUND Williston Basin Interstate Pipeline Company, an indirect wholly owned subsidiary of the company, had pending with the FERC a general natural gas rate change application implemented in 1992. In October 1997, Williston Basin appealed to the United States Court of Appeals for the D.C. Circuit (D.C. Circuit Court) certain issues decided by the FERC in orders concerning the 1992 proceeding. On January 22, 1999, the D.C. Circuit Court issued its opinion remanding the issues of return on equity, ad valorem taxes and throughput to the FERC for further explanation and justification. The mandate was issued by the D.C. Circuit Court to the FERC on March 11, 1999. By order dated June 1, 1999, the FERC remanded the return on equity issue to an Administrative Law Judge for further proceedings. On October 13, 1999, the FERC approved a settlement proposed by the parties to the proceeding which resolves the remanded return on equity issue and concludes the proceeding. Based on the FERC's approval of this settlement, Williston Basin sought reimbursement from its customers in the fourth quarter of 1999 of a portion of the refunds made in 1997 relating to the return on equity issue. In June 1995, Williston Basin filed a general rate increase application with the FERC. As a result of FERC orders issued after Williston Basin's application was filed, Williston Basin filed revised base rates in December 1995 with the FERC. Williston Basin began collecting such increase effective January 1, 1996, subject to refund. In July 1998, the FERC issued an order which addressed various issues including storage cost allocations, return on equity and throughput. In August 1998, Williston Basin requested rehearing of such order. On June 1, 1999, the FERC issued an order approving and denying various issues addressed in Williston Basin's rehearing request, and also remanding the return on equity issue to an Administrative Law Judge for further proceedings. On July 1, 1999, Williston Basin requested rehearing of certain issues which were contained in the June 1, 1999 FERC order. On September 29, 1999, the FERC granted Williston Basin's request for rehearing with respect to the return on equity issue but also ordered Williston Basin to issue interim refunds prior to the final determination in this proceeding. As a result, on October 29, 1999, Williston Basin issued refunds to its customers totaling $11.3 million, all from amounts which had previously been reserved. In mid-December 1999, a hearing was held before the FERC regarding the return on equity issue. In addition, on July 29, 1999, Williston Basin appealed to the D.C. Circuit Court certain issues concerning storage cost allocations as decided by the FERC in its June 1, 1999 order. On October 12, 1999, the D.C. Circuit Court issued an order which dismissed Williston Basin's appeal but permitted Williston Basin to again appeal such previously contested issues upon final determination of all issues by the FERC in this proceeding. On December 1, 1999, Williston Basin filed a general natural gas rate change application with the FERC. Williston Basin will begin collecting such rates effective June 1, 2000, subject to refund. Reserves have been provided for a portion of the revenues that have been collected subject to refund with respect to pending regulatory proceedings and to reflect future resolution of certain issues with the FERC. Based on the June 1, 1999 FERC orders referenced above, Williston Basin in the second quarter of 1999 determined that reserves it had previously established exceeded its expected refund obligation and, accordingly, reversed reserves in the amount of $4.4 million after tax. Williston Basin believes that its remaining reserves are adequate based on its assessment of the ultimate outcome of the various proceedings. NOTE 15 COMMITMENTS AND CONTINGENCIES Litigation In November 1993, the estate of W.A. Moncrief (Moncrief), a producer from whom Williston Basin purchased a portion of its natural gas supply, filed suit in Federal District Court for the District of Wyoming (Federal District Court) against Williston Basin and the company disputing certain price and volume issues under the contract. Through the course of this action Moncrief submitted damage calculations which totaled approximately $19 million or, under its alternative pricing theory, approximately $39 million. In June 1997, the Federal District Court issued its order awarding Moncrief damages of approximately $15.6 million. In July 1997, the Federal District Court issued an order limiting Moncrief's reimbursable costs to post-judgment interest, instead of both pre- and post-judgment interest as Moncrief had sought. In August 1997, Moncrief filed a notice of appeal with the United States Court of Appeals for the Tenth Circuit (U.S. Court of Appeals) related to the Federal District Court's orders. In September 1997, Williston Basin and the company filed a notice of cross-appeal. On April 20, 1999, the U.S. Court of Appeals issued its order which affirmed in part and reversed in part the Federal District Court's June 1997 decision. Additionally, the U.S. Court of Appeals remanded the case to the Federal District Court for further determination of the prices and volumes to be used for determination of damages. The U.S. Court of Appeals also remanded to the lower court for further consideration the issue of whether pre-judgment interest on damages is recoverable by Moncrief. As a result of the decision by the U.S. Court of Appeals, the prior judgment of $15.6 million by the Federal District Court was vacated. On December 8, 1999, a settlement was entered into between Williston Basin and Moncrief whereby Williston Basin paid Moncrief $3.0 million in settlement of all claims. On December 28, 1999, the United States District Court, District of Wyoming dismissed the case. Williston Basin believes that it is entitled to recover from customers virtually all of the costs which were incurred as a result of the settlement of this litigation as gas supply realignment transition costs pursuant to the provisions of the FERC's Order 636. However, the amount of costs that can ultimately be recovered is subject to approval by the FERC and market conditions. In December 1993, Apache Corporation (Apache) and Snyder Oil Corporation (Snyder) filed suit in North Dakota Northwest Judicial District Court (North Dakota District Court) against Williston Basin and the company. Apache and Snyder are oil and natural gas producers which had processing agreements with Koch Hydrocarbon Company (Koch). Williston Basin and the company had a natural gas purchase contract with Koch. Apache and Snyder alleged they were entitled to damages for the breach of Williston Basin's and the company's contract with Koch. Apache and Snyder submitted damage estimates under differing theories aggregating up to $4.8 million without interest. In November 1998, the North Dakota District Court entered an order directing the entry of judgment in favor of Williston Basin and the company. On March 31, 1999, judgment was entered, thereby dismissing Apache and Snyder's claims against Williston Basin and the company. Apache and Snyder filed a notice of appeal with the North Dakota Supreme Court on May 17, 1999. On December 28, 1999, the North Dakota Supreme Court affirmed the decision of the North Dakota District Court, thereby dismissing Apache and Snyder's claims against Williston Basin and the company. In a related matter, in March 1997, a suit was filed by 11 other producers, several of which had unsuccessfully tried to intervene in the Apache and Snyder litigation, against Koch, Williston Basin and the company. The parties to this suit are making claims similar to those in the Apache and Snyder litigation, although no specific damages have been stated. In Williston Basin's opinion, the claims of the 11 other producers are without merit. If any amounts are ultimately found to be due, Williston Basin plans to file with the FERC for recovery from customers. However, the amount of costs that can ultimately be recovered is subject to approval by the FERC and market conditions. In November 1995, a suit was filed in District Court, County of Burleigh, State of North Dakota (State District Court) by Minnkota Power Cooperative, Inc., Otter Tail Power Company, Northwestern Public Service Company and Northern Municipal Power Agency (Co-owners), the owners of an aggregate 75 percent interest in the Coyote electric generating station (Coyote Station), against the company (an owner of a 25 percent interest in the Coyote Station) and Knife River. In its complaint, the Co-owners alleged a breach of contract against Knife River with respect to the long-term coal supply agreement (Agreement) between the owners of the Coyote Station and Knife River. The Co- owners requested a determination by the State District Court of the pricing mechanism to be applied to the Agreement and further requested damages during the term of such alleged breach on the difference between the prices charged by Knife River and the prices that may ultimately be determined by the State District Court. The Co-owners also alleged a breach of fiduciary duties by the company as operating agent of the Coyote Station, asserting essentially that the company was unable to cause Knife River to reduce its coal price sufficiently under the Agreement, and the Co-owners sought damages in an unspecified amount. In May 1996, the State District Court stayed the suit filed by the Co-owners pending arbitration, as provided for in the Agreement. In September 1996, the Co-owners notified the company and Knife River of their demand for arbitration of the pricing dispute that had arisen under the Agreement. The demand for arbitration, filed with the American Arbitration Association (AAA), did not make any direct claim against the company in its capacity as operator of the Coyote Station. The Co-owners requested that the arbitrators make a determination that the prices charged by Knife River were excessive and that the Co-owners be awarded damages, based upon the difference between the prices that Knife River charged and a "fair and equitable" price. Upon application by the company and Knife River, the AAA administratively determined that the company was not a proper party defendant to the arbitration, and the arbitration proceeded against Knife River. In October 1998, a hearing before the arbitration panel was completed. At the hearing the Co-owners requested damages of approximately $24 million, including interest, plus a reduction in the future price of coal under the Agreement. During 1999, the arbitration panel issued three Memorandum Opinions (Opinions) and held an additional hearing. Based on its assessment of the proceedings, Knife River's earnings in the second quarter of 1999 reflected a $3.7 million after-tax charge regarding this matter. As a result of the Memorandum Opinion rendered by the arbitrators in August 1999, Knife River's 1999 third quarter earnings included a $1.9 million after-tax charge reflecting the resolution of this matter. The arbitration panel also revised the pricing terms of the Agreement beginning April 1, 1999. The revised pricing terms retained the minimum return on sales provision but at a lower guaranteed level than the Agreement previously provided. On January 5, 2000, the State District Court entered a judgment agreed to by all parties that dismissed the company from the action, confirmed the Opinions of the arbitration panel, filed the Opinions under seal pursuant to a confidentiality agreement among the parties, held that each party shall bear its own costs subject to any contractual agreements to the contrary, dismissed the November 1995 action, and confirmed that all sums due pursuant to the arbitration have been paid and satisfied. On June 3, 1999, several oil and gas royalty interest owners filed suit in Colorado State District Court, in the City and County of Denver, against WBI Production, Inc. (WBI Production), an indirect wholly owned subsidiary of the company, and several former producers of natural gas with respect to certain gas production properties in the state of Colorado. The complaint arose as a result of the purchase by WBI Production effective January 1, 1999, of certain natural gas producing leaseholds from the former producers. Prior to February 1, 1999, the natural gas produced from the leaseholds was sold at above market prices pursuant to a natural gas contract. Pursuant to the contract, the royalty interest owners were paid royalties based upon the above market prices. The royalty interest owners have alleged that WBI Production took assignment of the rights to the natural gas contract from the former owner of the contract and, with respect to natural gas produced from such leases and sold at market prices thereafter, wrongly ceased paying the higher royalties on such gas. In their complaint, the royalty interest owners have alleged, in part, breach of oil and gas lease obligations and unjust enrichment on the part of WBI Production and the other former producers with respect to the amount of royalties being paid to the royalty interest owners. The royalty interest owners have requested damages for additional royalties and other costs, including pre-judgment interest. No specific amount of damages has been stated. Trial before the Colorado State District Court has been scheduled for April 24, 2000. WBI Production intends to vigorously contest the suit. In July 1996, Jack J. Grynberg (Grynberg) filed suit in United States District Court for the District of Columbia (U.S. District Court) against Williston Basin and over 70 other natural gas pipeline companies. Grynberg, acting on behalf of the United States under the Federal False Claims Act, alleged improper measurement of the heating content or volume of natural gas purchased by the defendants resulting in the underpayment of royalties to the United States. In March 1997, the U.S. District Court dismissed the suit without prejudice and the dismissal was affirmed by the D. C. Circuit Court in October 1998. In June 1997, Grynberg filed a similar Federal False Claims Act suit against Williston Basin and Montana-Dakota and filed over 70 separate similar suits against natural gas transmission companies and producers, gatherers, and processors of natural gas. In April 1999, the United States Department of Justice decided not to intervene in these cases. In response to a motion filed by Grynberg, the Judicial Panel on Multidistrict Litigation consolidated all of these cases in the Federal District Court of Wyoming. The Quinque Operating Company (Quinque), on behalf of itself and subclasses of gas producers, royalty owners and state taxing authorities, instituted a legal proceeding in State District Court for Stevens County, Kansas, against over 200 natural gas transmission companies and producers, gatherers, and processors of natural gas, including Williston Basin and Montana-Dakota. The complaint, which was served on Williston Basin and Montana-Dakota in September 1999, contains allegations of improper measurement of the heating content and volume of all natural gas measured by the defendants other than natural gas produced from federal lands. The suit has been removed to the U.S. District Court, District of Kansas. The defendants in this suit have filed a motion to have the suit transferred to Wyoming and consolidated with the Grynberg proceedings. Williston Basin and Montana-Dakota believe the claims of Grynberg and Quinque are without merit and intend to vigorously contest these suits. Other During the third quarter of 1999, the company and Williston Basin reached resolution with respect to certain production tax and other state tax matters that had been outstanding, some dating back to 1989. Deficiency claims of approximately $5.6 million, plus interest, had been received with respect to these issues. As a result in September 1999, Williston Basin reversed reserves which were no longer needed in an amount of $3.9 million after tax. The company is also involved in other legal actions in the ordinary course of its business. Although the outcomes of any such legal actions cannot be predicted, management believes that there is no pending legal proceeding against or involving the company, except those discussed above, for which the outcome is likely to have a material adverse effect upon the company's financial position or results of operations. Electric purchased power commitments Through October 31, 2006, Montana-Dakota has contracted to purchase 66,400 kW of participation power from Basin Electric Power Cooperative. In addition, Montana-Dakota, under a power supply contract through December 31, 2006, is purchasing up to 55,000 kW of capacity from Black Hills Power and Light Company. NOTE 16 QUARTERLY DATA (UNAUDITED) The following unaudited information shows selected items by quarter for the years 1999 and 1998: First Second Third Fourth Quarter Quarter Quarter Quarter (In thousands, except per share amounts) 1999 Operating revenues $259,046 $290,267 $375,591 $354,905 Operating expenses 233,585 254,619 321,535 310,319 Operating income 25,461 35,648 54,056 44,586 Net income 12,721 17,796 29,098 24,465 Earnings per common share: Basic .24 .33 .53 .43 Diluted .23 .33 .52 .42 Weighted average common shares outstanding: Basic 53,147 53,373 54,995 56,898 Diluted 53,420 53,603 55,278 57,127 1998* Operating revenues $170,122 $179,715 $269,978 $276,812 Operating expenses 137,913 186,310 227,283 274,178 Operating income (loss) 32,209 (6,595) 42,695 2,634 Net income (loss) 17,793 (5,785) 22,538 (439) Earnings (loss) per common share: Basic .39 (.12) .42 (.01) Diluted .39 (.12) .42 (.01) Weighted average common shares outstanding: Basic 45,375 50,936 52,703 53,021 Diluted 45,629 50,936 53,062 53,021 * Reflects $20.0 million and $19.9 million in noncash after-tax write- downs of oil and natural gas properties for the second quarter and fourth quarter of 1998, respectively. Certain company operations are highly seasonal and revenues from and certain expenses for such operations may fluctuate significantly among quarterly periods. Accordingly, quarterly financial information may not be indicative of results for a full year. NOTE 17 OIL AND NATURAL GAS ACTIVITIES (UNAUDITED) Fidelity Exploration & Production Company, an indirect wholly owned subsidiary of the company, is involved in the acquisition, exploration, development and production of oil and natural gas resources. Fidelity's operations include the acquisition of producing properties with potential development opportunities, exploratory drilling and the operation of natural gas production properties. Fidelity shares revenues and expenses from the development of specified properties located throughout the United States and in the Gulf of Mexico in proportion to its interests. Fidelity also owns in fee or holds natural gas leases for the properties it operates in Montana, North Dakota and Colorado. These rights are in the Cedar Creek Anticline in southeastern Montana, in the Bowdoin area located in north-central Montana and the Bonny Field located in eastern Colorado. The information that follows includes the company's proportionate share of all its oil and natural gas interests held by Fidelity. The following table sets forth capitalized costs and accumulated depreciation, depletion and amortization related to oil and natural gas producing activities at December 31: 1999 1998 1997 (In thousands) Subject to amortization $319,448 $266,301 $252,291 Not subject to amortization 23,464 22,153 9,408 Total capitalized costs 342,912 288,454 261,699 Less accumulated depreciation, depletion and amortization 129,211 111,472 95,611 Net capitalized costs $213,701 $176,982 $166,088 NOTE: Net capitalized costs as of December 31, 1998, reflect noncash write-downs of the company's oil and natural gas properties as discussed in Note 1. Capital expenditures, including those not subject to amortization, related to oil and natural gas producing activities are as follows: Years ended December 31, 1999 1998 1997 (In thousands) Acquisitions $ 30,842 $ 63,419 $ 59 Exploration 11,010 15,976 13,344 Development 21,822 21,148 18,874 Total capital expenditures $ 63,674 $100,543 $ 32,277 The following summary reflects income resulting from the company's operations of oil and natural gas producing activities, excluding corporate overhead and financing costs: Years ended December 31, 1999 1998 1997 (In thousands) Revenues $ 75,327 $ 61,831 $ 77,756 Production costs 25,402 19,419 23,251 Depreciation, depletion and amortization 19,136 23,050 24,864 Write-downs of oil and natural gas properties (Note 1) --- 66,000 --- Pretax income 30,789 (46,638) 29,641 Income tax expense (benefit) 11,815 (19,268) 10,968 Results of operations for producing activities $ 18,974 $(27,370) $ 18,673 The following table summarizes the company's estimated quantities of proved oil and natural gas reserves at December 31, 1999, 1998 and 1997, and reconciles the changes between these dates. Estimates of economically recoverable oil and natural gas reserves and future net revenues therefrom are based upon a number of variable factors and assumptions. For these reasons, estimates of economically recoverable reserves and future net revenues may vary from actual results. 1999 1998 1997 Natural Natural Natural Oil Gas Oil Gas Oil Gas (In thousands of barrels/Mcf) Proved developed and undeveloped reserves: Balance at beginning of year 11,500 243,600 14,900 184,900 16,100 200,200 Production (1,800) (24,700) (1,900) (20,700) (2,100) (20,400) Extensions and discoveries 800 21,800 200 21,300 600 12,100 Purchases of proved reserves 700 38,200 2,000 56,600 --- 200 Sales of reserves in place (400) (9,300) --- (100) (200) (2,300) Revisions to previous estimates due to improved secondary recovery techniques and/or changed economic conditions 3,900 (700) (3,700) 1,600 500 (4,900) Balance at end of year 14,700 268,900 11,500 243,600 14,900 184,900 Proved developed reserves: January 1, 1997 15,400 168,200 December 31, 1997 14,500 163,800 December 31, 1998 10,700 193,000 December 31, 1999 13,300 213,400 All of the company's interests in oil and natural gas reserves are located in the United States and in the Gulf of Mexico. The standardized measure of the company's estimated discounted future net cash flows of total proved reserves associated with its various oil and natural gas interests at December 31 is as follows: 1999 1998 1997 (In thousands) Future net cash flows before income taxes $ 492,000 $246,700 $306,600 Future income tax expenses 131,500 40,500 86,600 Future net cash flows 360,500 206,200 220,000 10% annual discount for estimated timing of cash flows 131,400 81,100 81,000 Discounted future net cash flows relating to proved oil and natural gas reserves $ 229,100 $125,100 $139,000 The following are the sources of change in the standardized measure of discounted future net cash flows by year: 1999 1998 1997 (In thousands) Beginning of year $ 125,100 $139,000 $234,000 Net revenues from production (49,900) (42,400) (54,500) Change in net realization 123,100 (70,500) (158,400) Extensions, discoveries and improved recovery, net of future production-related costs 33,500 18,200 19,400 Purchases of proved reserves 57,700 51,000 200 Sales of reserves in place (14,700) (100) (2,800) Changes in estimated future development costs, net of those incurred during the year (9,800) (16,600) 7,700 Accretion of discount 16,700 18,600 32,800 Net change in income taxes (59,800) 30,100 62,100 Revisions of previous quantity estimates 7,400 (1,600) (1,300) Other (200) (600) (200) Net change 104,000 (13,900) (95,000) End of year $ 229,100 $125,100 $139,000 The estimated discounted future cash inflows from estimated future production of proved reserves were computed using year-end oil and natural gas prices. Future development and production costs attributable to proved reserves were computed by applying year-end costs to be incurred in producing and further developing the proved reserves. Future income tax expenses were computed by applying statutory tax rates (adjusted for permanent differences and tax credits) to estimated net future pretax cash flows. Report of Independent Public Accountants To MDU Resources Group, Inc. We have audited the accompanying consolidated balance sheets of MDU Resources Group, Inc. (a Delaware corporation) and Subsidiaries as of December 31, 1999 and 1998, and the related consolidated statements of income, common stockholders' equity and cash flows for each of the three years in the period ended December 31, 1999. These financial statements are the responsibility of the company's management. Our responsibility is to express an opinion on these financial statements based on our audits. We conducted our audits in accordance with generally accepted auditing standards. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements. An audit also includes assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. We believe that our audits provide a reasonable basis for our opinion. In our opinion, the financial statements referred to above present fairly, in all material respects, the financial position of MDU Resources Group, Inc. and Subsidiaries as of December 31, 1999 and 1998, and the results of their operations and their cash flows for each of the three years in the period ended December 31, 1999, in conformity with generally accepted accounting principles. ARTHUR ANDERSEN LLP Minneapolis, Minnesota January 24, 2000 OPERATING STATISTICS MDU RESOURCES GROUP, INC. 1999 1998* 1997 1996 1995 1994 1989 Selected Financial Data Operating revenues: (000's) Electric $ 154,869 $ 147,221 $ 141,590 $ 138,761 $ 134,609 $ 133,953 $ 126,228 Natural gas distribution 157,692 154,147 157,005 155,012 150,532 155,319 142,310 Utility services 99,917 64,232 22,761 --- --- --- --- Pipeline and energy services 383,532 180,732 87,018 71,580 67,186 63,874 107,014 Oil and natural gas production 78,394 61,842 77,916 75,350 53,505 44,936 27,351 Construction materials and mining 469,905 346,451 174,147 132,222 113,066 116,646 41,643 Intersegment eliminations (64,500) (57,998) (52,763) (58,224) (54,652) (65,200) (91,773) $1,279,809 $ 896,627 $ 607,674 $ 514,701 $ 464,246 $ 449,528 $ 352,773 Operating income: (000's) Electric $ 35,727 $ 32,167 $ 31,307 $ 29,476 $ 29,898 $ 27,596 $ 32,592 Natural gas distribution 6,688 8,028 10,410 11,504 6,917 3,948 7,781 Utility services 11,518 5,932 1,782 --- --- --- --- Pipeline and energy services 40,627 33,651 25,822 27,697 24,043 19,024 23,683 Oil and natural gas production 26,845 (50,444) 27,638 26,786 15,255 11,014 11,572 Construction materials and mining 38,346 41,609 14,602 16,062 14,463 16,593 9,087 $ 159,751 $ 70,943 $ 111,561 $ 111,525 $ 90,576 $ 78,175 $ 84,715 Earnings on common stock: (000's) Electric $ 15,973 $ 13,908 $ 12,441 $ 11,436 $ 12,000 $ 11,719 $ 13,385 Natural gas distribution 3,192 3,501 4,514 4,892 1,604 285 3,123 Utility services 6,505 3,272 947 --- --- --- --- Pipeline and energy services 20,972 18,651 9,955 1,649 7,804 5,106 3,125 Oil and natural gas production 16,207 (30,501) 15,867 15,185 8,614 10,316 7,362 Construction materials and mining 20,459 24,499 10,111 11,521 10,819 11,622 8,890 $ 83,308 $ 33,330 $ 53,835 $ 44,683 $ 40,841 $ 39,048 $ 35,885 Earnings per common share -- diluted $ 1.52 $ .66 $ 1.24 $ 1.04 $ .95 $ .91 $ .84 Common Stock Statistics Weighted average common shares outstanding -- diluted (000's) 54,870 50,837 43,478 42,824 42,789 42,763 42,715 Dividends per common share $ .82 $ .7834 $ .7534 $ .7333 $ .7188 $ .7022 $ .6533 Book value per common share $ 11.74 $ 10.39 $ 8.84 $ 8.21 $ 7.90 $ 7.66 $ 6.71 Market price per common share (year-end) $ 20.00 $ 26.31 $ 21.08 $ 15.33 $ 13.25 $ 12.06 $ 10.05 Market price ratios: Dividend payout 55% 119% 61% 70% 76% 77% 78% Yield 4.2% 3.0% 3.6% 4.8% 5.5% 5.9% 6.5% Price/earnings ratio 13.2x 39.9x 17.0x 14.6x 13.9x 13.2x 12.0x Market value as a percent of book value 170.4% 253.2% 238.5% 186.8% 167.7% 157.4% 149.7% Profitability Indicators Return on average common equity 13.9% 6.5% 14.6% 13.0% 12.3% 12.1% 12.5% Return on average invested capital 9.6% 5.5% 10.3% 9.5% 9.2% 9.1% 9.2% Interest coverage 7.1x 6.1x 6.0x 5.4x 3.9x 3.3x 2.8x Fixed charges coverage, including preferred dividends 4.3x 2.5x 3.4x 2.7x 3.0x 2.8x 2.3x General Total assets (000's) $1,766,303 $1,452,775 $1,113,892 $1,089,173 $1,056,479 $1,004,718 $ 971,401 Net long-term debt (000's) $ 563,545 $ 413,264 $ 298,561 $ 280,666 $ 237,352 $ 217,693 $ 234,333 Redeemable preferred stock (000's) $ 1,600 $ 1,700 $ 1,800 $ 1,900 $ 2,000 $ 2,100 $ 2,600 Capitalization ratios: Common stockholders' equity 54% 56% 55% 54% 57% 58% 53% Preferred stocks 1 2 2 3 3 3 3 Long-term debt 45 42 43 43 40 39 44 100% 100% 100% 100% 100% 100% 100% <FN> * Reflects $39.9 million or 78 cents per common share in noncash after-tax write-downs of oil and natural gas properties. </FN> NOTE: Common stock share amounts reflect the company's three-for-two common stock splits effected in October 1995 and July 1998. 1999 1998 1997 1996 1995 1994 1989 Electric Sales to ultimate consumers (thousand kWh) 2,075,446 2,053,862 2,041,191 2,067,926 1,993,693 1,955,136 1,836,099 Sales for resale (thousand kWh) 943,520 586,540 361,954 374,535 408,011 444,492 311,327 Electric system generating and firm purchase capability -- kW (Interconnected system) 492,800 489,100 487,500 481,800 472,400 470,900 451,600 Demand peak -- kW (Interconnected system) 420,550 402,500 404,600 393,300 412,700 369,800 383,600 Electricity produced (thousand kWh) 2,350,769 2,103,199 1,826,770 1,829,669 1,718,077 1,901,119 1,773,849 Electricity purchased (thousand kWh) 860,508 730,949 769,679 809,261 867,524 700,912 557,650 Average cost of fuel and purchased power per kWh $ .016 $ .017 $ .018 $ .017 $ .016 $ .017 $ .017 Natural Gas Distribution Sales (Mdk) 30,931 32,024 34,320 38,283 33,939 31,840 31,643 Transportation (Mdk) 11,551 10,324 10,067 9,423 11,091 9,278 9,321 Weighted average degree days -- % of previous year's actual 89% 94% 85% 114% 105% 92% 112% Pipeline and Energy Services Pipeline: Sales for resale (Mdk) --- --- --- --- --- --- 27,274 Transportation (Mdk) 78,061 88,974 85,464 82,169 68,015 63,870 51,159 Energy services: Natural gas volumes (Mdk) 131,687 58,495 14,971 4,670 3,556 7,301 843 Propane (thousand gallons) 6,440 7,037 10,005 9,689 7,471 6,462 --- Oil and Natural Gas Production Production: Oil (000's of barrels) 1,758 1,912 2,088 2,149 1,973 1,565 1,348 Natural gas (MMcf) 24,652 20,699 20,407 20,391 17,574 14,162 3,632 Average prices: Oil (per barrel) $ 15.34 $ 12.71 $ 17.50 $ 17.91 $ 15.07 $ 13.14 $ 16.26 Natural gas (per Mcf) $ 1.94 $ 1.81 $ 2.02 $ 1.79 $ 1.33 $ 1.69 $ 1.33 Net recoverable reserves: Oil (000's of barrels) 14,700 11,500 14,900 16,100 14,200 12,500 12,000 Natural gas (MMcf) 268,900 243,600 184,900 200,200 179,000 154,200 10,800 Construction Materials and Mining Construction materials: (000's) Aggregates (tons sold) 13,981 11,054 5,113 3,374 2,904 2,688 --- Asphalt (tons sold) 2,993 1,790 758 694 373 391 --- Ready-mixed concrete (cubic yards sold) 1,186 1,021 516 340 307 315 --- Recoverable aggregate reserves (tons) 740,030 654,670 169,375 119,800 68,000 71,000 --- Coal: (000's) Sales (tons) 3,236 3,113 2,375 2,899 4,218 5,206 4,747 Recoverable reserves (tons) 182,761 190,152 226,560 228,900 231,900 236,100 266,000