Occurrence at hoist house. Hoist was not running at time of occurrence. A forklift operator for another contractor went under hoist cable with forklift. When backing up, he hooked the hoist rope with the forklift, pulled cable back causing damage to hoist house. The rope was kinked and had to be replaced with new rope. Job site down from 3:30 pm 3/24/07 until 1:30 am 3/26/07.