THE INJURED PERSON WAS IN THE MINER CONVEYER BOOM CHECKING SCRUBBER. HE TOLD THE PERSON ON THE GROUND TO START THE SCRUBBER THAT HE WAS WORKING ON. THE OTHER MAN STARTED CONVEYER CHAIN BY MIST AKE. THE INJURED MAN'S RIGHT FOOT WAS PULLED UNDER A ROCK THAT WAS IN THE CONVEYER CHAIN.