TWO PREP PLANT MECHANICS WERE CHANGING A MOTOR BASE. THEY HAD THE MOTOR RAISED USING A 5 TON HOIST & A 1 TON HOIST. AS THEY WERE ALIGNING THE BASE WITH THE MOTOR MOUNTS USING BOLTS TO ALIGN TH E HOLES THE CABLE IN THE 5 TON HOIST SLIPPED APPROXIMATELY 2"". THE MECHANIC'S FINGERS WERE PINCHED BY THE BOLT & BASE.