EXHIBIT 12.1 OCI HOLDINGS CORP. COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES (DOLLARS IN THOUSANDS) FISCAL YEAR END ------------------------------------------------------------------------------------ JULY 31, AUGUST 31, JULY 31, AUGUST 31, JULY 31, AUGUST 31, JULY 31, AUGUST 31, AUGUST 1, 1995 1992 1992 1993 1993 1994 1994 1995 1995 TO APRIL 3, 1996 OCI NORTH OCI SOUTH OCI NORTH OCI SOUTH OCI NORTH OCI SOUTH OCI NORTH OCI SOUTH OCI NORTH --------- ----------- --------- ---------- --------- ---------- --------- ---------- ---------------- Net income (loss).......... $(1,570) $ (204) $(1,564) $ 77 $(1,366) $ 540 $ (104) $ 784 $(1,051) Income tax expense (benefit)....... -- 14 (723) 170 (473) 340 (133) 524 156 ------- ------ ------- ------ ------- ------ ------ ------ ------- Income (loss) before income taxes........... (1,570) (190) (2,287) 247 (1,839) 880 (237) 1,308 (895) Plus fixed charges......... 2,479 1,273 2,407 1,080 2,395 1,102 2,483 1,523 1,719 ------- ------ ------- ------ ------- ------ ------ ------ ------- Earnings........ $ 909 $1,083 $ 120 $1,327 $ 556 $1,982 $2,246 $2,831 $ 824 ======= ====== ======= ====== ======= ====== ====== ====== ======= SEPTEMBER 1, 1995 TO APRIL 3, 1996 OCI SOUTH ----------------- Net income (loss).......... $ 269 Income tax expense (benefit)....... 201 ----------------- Income (loss) before income taxes........... 470 Plus fixed charges......... 845 ----------------- Earnings........ $1,315 ================= Interest expense......... $ 2,120 $1,040 $ 2,030 $ 845 $ 2,042 $ 853 $2,127 $1,173 $ 1,461 Amortization of deferred financing costs........... -- -- -- -- -- 11 -- 96 -- Interest factor of rent expense......... 359 233 377 235 353 238 356 254 258 ------- ------ ------- ------ ------- ------ ------ ------ ------- Fixed charges .. $ 2,479 $1,273 $ 2,407 $1,080 $ 2,395 $1,102 $2,483 $1,523 $ 1,719 ======= ====== ======= ====== ======= ====== ====== ====== ======= Ratio of earnings to fixed charges... -- -- -- 1.2x -- 1.8x -- 1.9x -- Fixed charges exceed earnings by (3).......... $ 1,570 $ 190 $ 2,287 $ -- $ 1,839 $ -- $ 237 $ -- $ 895 ======= ====== ======= ====== ======= ====== ====== ====== ======= Interest expense......... $ 645 Amortization of deferred financing costs........... 55 Interest factor of rent expense......... 145 ----------------- Fixed charges .. $ 845 ================= Ratio of earnings to fixed charges... 1.6x Fixed charges exceed earnings by (3).......... $ -- ================= OCI --------------------------------------------------------------- UNADJUSTED UNADJUSTED APRIL 4, 1996 COMBINED PERIOD COMBINED PERIOD NINE MONTHS TO JUNE 30, ENDED ENDED ENDED 1996 JUNE 30, 1996(1) MARCH 31, 1996(2) MARCH 31, 1997 ------------- ---------------- ----------------- -------------- Net income (loss).......... $ (84) $ (866) $ (782) $ (762) Income tax expense (benefit)....... 106 463 357 22 ------ ------ ------ ------ Income (loss) before income taxes........... 22 (403) 425 (740) Plus fixed charges......... 2,255 4,819 2,564 9,430 ------ ------ ------ ------ Earnings........ $2,277 $4,416 $2,989 $8,690 ====== ====== ====== ====== Interest expense......... 1,826 3,932 2,106 7,597 Amortization of deferred financing costs........... 123 178 403 485 Interest factor of rent expense......... 306 709 55 1,348 ------ ------ ------ ------ Fixed charges .. $2,255 $4,819 $2,564 $9,430 ====== ====== ====== ====== Ratio of earnings to fixed charges... 1.0x -- 1.2x -- Fixed charges exceed earnings by (3).......... $ -- $ 403 $ -- $ 740 ====== ====== ====== ====== NOTES TO THE COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES (1) The historical statement of operations data for OCI for the period April 4, 1996 through June 30, 1996 has been added to the historical statement of operations data of OCI North and OCI South for the period August 1, 1995 through April 3, 1996 and September 1, 1995 through April 3, 1996, respectively, to arrive at the unadjusted combined information for the period ended June 30, 1996. (2) The historical statement of operations data of OCI North and OCI South for the period August 1, 1995 through April 3, 1996 and September 1, 1995 through April 3, 1996, respectively, have been combined to arrive at the unadjusted combined information for the period ended March 31, 1996. (3) Earnings were not adequate to cover fixed changes.