EE was installing roof bolts, EE swung drill head out,a hose caught one of the bolts, EE reached across drill head when piece of rock (2'x2'x2"")fell striking the right forearm against the boom, rock slid down & struck the hand. EE was taken to ER,received 3 sutures in forearm,3 in the hand. EE fractured the long bone in the right hand just before the knuckle of the pointer finger.