The miner was working by the conex obtaining a service water pump and motor to install on the dredge. While loading items into the skid steer bucket with two plant employees, the injured miner lost EE's grip and dropped EE's end onto EEs finger, which resulted in a cut to EEs finger. The miner finished work on the dredge. At 10:10 pm the miner left the site to go to the hospital.