WHILE EE WAS PUTTING ON NUTS USED TO FASTEN DOWNA DIESTER, ANOTHER EMPLOYEE WAS TIGHTENING DOWN THE BOLTS WITH AN IMPACT WRENCH. AS EE WAS HOLDING THE NUT IN PLACE, IT SUDDNELY STARTED TWISTIN G. HIS GLOVE GOT CAUGHT IN THE TWISTING NUT, STRAINING HIS WRIST/ HAND.