EE WAS ASSISTING A COWORKER TO REMOVE A RUB RAIL FROM A CONTINUOUS MINER. WHEN HE SWUNG THE RAILHE TRIPPED AND FELL STRADDLING THE RAIL. HE STATES HE LANDED ON HIS TESTICLES. HE WORKED UNTIL 6-5-01 ATWHICH TIME HE WAS INSTRUCTED TO REMAIN OFF WORK UNTIL FURTHER NOTICE.