EE WAS HELPING TO PULL THE SWING AWAY JIB, BACK ONT HE MAIN BOOM OF A 150 TON CRANE EE WAS USING A 3/8 POLY ROPE TO PULL THE JIB IN BY HAND, THE ROPE BROKE BETWEEN EE AND OTHER THE ROPE SLIPPE D THRU EE S HAND. HE RECEIVED LACERATION TO HIS RIGHT THUMB AND FOUR FINGERS OF HIS OF HIS LEFT HANDS. HE WAS TAKEN TO THE ARH MEDICAL CENTER E.R. FOR TREATMENT.