On March 22 , 2013 , one miner died .
Another was injured after they became trapped in a cave - in at a part of the Castle Valley Mining Complex , about 10 miles ( 16 km ) west of Huntington .
On March 22 , 2013 , one miner died and another was injured after they became trapped in a cave - in at a part of the Castle Valley Mining Complex , about 10 miles ( 16 km ) west of Huntington .