[LOGO] Safety-Kleen Corp. 1000 N. Randall Road Elgin, IL 60123 (847) 697-8460 For further information: FOR IMMEDIATE RELEASE CONTACT: MAUREEN FISK (847) 468-2452 SAFETY-KLEEN CORP. ANNOUNCES FIRST QUARTER 1997 RESULTS Elgin, Illinois -- April 11, 1997 -- Safety-Kleen Corp. (NYSE/SK) today announced results for the first quarter ended March 22, 1997. Consolidated revenue for the period was $220.2 million, up 9.2% compared with $201.7 million for the first quarter in 1996. Net earnings were $11.8 million, or $.20 per share, compared with $13.1 million, or $0.23 per share reported in the same quarter one year ago. Revenue from the Company's Automotive/Retail Repair Services, which includes its newly-introduced Vacuum Service, was up 9% compared with the prior year, while Industrial Services revenue grew 10% . The Company's tolling operations reported stronger first quarter 1997 results, while in Europe, revenue was up 4% with solid improvement in after tax earnings. President and Chief Executive Officer, John G. Johnson, Jr., noted, "We are pleased to announce that our established businesses performed within our expectations from a revenue standpoint. We remain confident in our ability to produce top line revenue growth but also recognize our earnings performance will be adversely impacted in view of the unique oil situation as well as the costs associated with starting and growing several new business opportunities." As expected and announced in a Company release issued March 11, 1997, the Company's Oil Recovery Services ("ORS") earnings decreased reflecting the continued depressed pricing in the lube oil market. ORS reported a revenue increase of 8% compared with one year ago, however it posted an after tax loss of approximately $730,000 compared to after tax earnings of $860,000 reported in the first quarter of 1996. The current trend of lube oil pricing has impacted the profitability of the approximately 60 million gallons of re-refined base oil that it sells annually. Safety-Kleen sold approximately 12 million gallons of re-refined base lube in the first quarter of 1997. Johnson added, "The average selling price for re-refined lube oil in the first quarter of 1997 was $0.865 per gallon, compared with $0.994 per gallon in the first quarter of 1996. We believe that there is still excess capacity in the market and therefore do not expect prices to return to historic levels in the near future," Johnson said. -More- [LOGO] Printed on recycled paper. [LOGO] SAFETY-KLEEN CORP. ADD ONE Johnson further added, "Our new businesses are producing consistent top line growth for the Company. We are on an aggressive rollout of our Vacuum Service program which reported revenue of just under $3 million in the first quarter of 1997. Our Imaging Service also continues to show revenue growth through the addition of customers. We expect this business to improve from a profitability standpoint as the efficiency of our Branch Imaging Specialists increases. As each of our new businesses progress from the startup phase, they will make measurable contributions to the earnings line," Johnson concluded. Safety-Kleen is an environmental and industrial service company dedicated to helping businesses recycle and process their waste streams. Its stock is traded on the New York Stock Exchange under the symbol "SK". For further information, contact Safety-Kleen via e-mail: FINANCE@SAFETY-KLEEN.COM. PRIVATE SECURITIES LITIGATION REFORM ACT DISCLOSURE This press release contains various forward-looking statements, including revenue and operating projections. There are many factors that could cause actual results to differ materially, such as: adoption of new environmental laws and regulations and changes in the ways such laws and regulations are interpreted and enforced; general business conditions, such as the level of competition, changes in demand for the Company's services and the strength of the economy in general; and prices for petroleum based products. - END - [LOGO] CONSOLIDATED STATEMENT OF EARNINGS (thousands, except per share amounts) TWELVE WEEKS ENDED Mar. 22,1997 Mar. 23, 1996 Revenue North America Automotive/Retail Repair Services $ 59,317 $ 54,609 Industrial Services Parts Cleaner ................. 31,029 28,763 Fluid Recovery ................ 34,357 30,448 Total Industrial .............. 65,386 59,211 Oil Recovery Services ........... 32,858 30,399 Other ........................... 37,249 33,034 Total North America ............. 194,810 177,253 Europe ............................. 25,420 24,470 Consolidated Revenue ................. 220,230 201,723 Operating costs and expenses ......... 164,084 145,823 Selling and administrative expenses .. 32,575 29,728 Operating income ..................... 23,571 26,172 Interest income ...................... 227 180 Interest expense ..................... (4,361) (4,264) Earnings before income taxes ......... 19,437 22,088 Income taxes ......................... 7,599 9,011 Net earnings ......................... $ 11,838 $ 13,077 Earnings per common and common equivalent share ................... $ 0.20 $ 0.23 Average number of common and common equivalent shares outstanding ...... 58,420 57,903 Cash dividends per common share ...... $ 0.09 $ 0.09 - -------------------------------- 1. The Company's interim reporting periods are twelve weeks each for the first three reporting periods of the year and seventeen and sixteen weeks for the fourth interim period of 1997 and 1996, respectively.