Vale fires 500 coal miners in Australia, shuts down operations .May 16, 2014 . Vale says mines are not economically feasible under current market conditions.vale fires coal miners in australia,Coal seam fire - WikipediaA coal seam fire or mine fire is the underground smouldering of a coal deposit, often in a coal . It is estimated that Australia's Burning Mountain, the oldest known coal fire, has burned for 6,000 years. Globally, thousands of . Underground coal mines can be equipped with permanently installed sensor systems. These relay.
vale fires coal miners in australia