On 3/8/10, EE was in process of removing the Miller Welder from #7 belt head. EE set the welder on some hanging cables. The welder started to fall and EE grabbed the welder w/his right hand to prevent it from hitting ground. EE heard his shoulder pop and felt pain. EE was referred to Dr where he was placed off work on 8/17/10, 1st day of work missed.