EE(1) and EE(2) were drilling holes in rubber to attach to the scalping screen. EE(2) was drilling while injured EE(1) was holding the rubber. Another EE(3) was just outside of scalping screen. EE(3) could have been used by EE(2) and EE(1) to communicate before drilling. This resulted in EE(1) getting their right palm injured by the drill. EE(1) got three heavy duty stitches.