Employee 1 was operating a crane to move a pumping unit. Employee 2 was holding a tag line. The crane lifted the pumping unit and began rotating clockwise to place it on top of a concrete base. The front driver s side outrigger and float began to sink into the ground, causing the crane to lean over. This caused the pumping unit to swing and strike into an adjacent wellhead, breaking some piping and causing a fire. The crane then fell over and it's boom broke piping on a second wellhead, contributing further to the fire. Employee 1 fell out of the cab and crawled out of the fire. He sustained burns to his face and hands and had fractured ribs. He was hospitalized. Employee 2 was burned on his cheek, arm, and leg.