Exhibit 12 TEREX CORPORATION CALCULATION OF RATIO OF EARNINGS TO FIXED CHARGES (amounts in millions) Three Months Ended March 31, ------------------------- 2003 2002 ------------------------- Earnings Income before income taxes and cumulative effect of change in accounting principle............................................ $ 16.6 $ 9.1 Adjustments: Minority interest in losses of consolidated subsidiaries........ --- --- Undistributed (income) loss of less than 50% owned investments.. --- --- Distributions from less than 50% owned investments.............. --- --- Fixed charges................................................... 31.4 24.9 ----------- ------------ Earnings.......................................................... 48.0 34.0 ----------- ------------ Fixed charges, including preferred accretion Interest expense, including debt discount amortization............ 25.9 22.0 Accretion of redeemable convertible preferred stock.............. --- --- Amortization/write-off of debt issuance costs..................... 1.3 1.0 Portion of rental expense representative of interest factor (assumed to be 33%)............................................. 4.2 1.9 ----------- ------------ Fixed charges..................................................... $ 31.4 $ 24.9 ----------- ------------ Ratio of earnings to fixed charges.................................. 1.5x 1.4x =========== ============ Amount of earnings deficiency for coverage of fixed charges......... $ --- $ --- =========== ============