Miner was washing TT1.They shut the nozzle off and pulled on the hose. The miner was holding the hose 2 feet away from the nozzle. The nozzle appears to have contacted a beam and turned on. When it energized, it flipped the nozzle up impacting the nose and mouth area resulting in a laceration at the base of the left nostril. Miner received three stitches on the laceration.