EE was using a 5' pry bar trying to remove a big rock off miner on #2 unit in #7 entry. Another rock underneath the rock he was removing that he was not aware of. As he pryed rock closer to edge of miner rock underneath fell off miner & struck him on top of foot. He had on metarasal boots. x-rays two bones on top of foot were fractured. rock size 3 1/2'x2'x8'.