A new Duke University-led study has revealed the presence of radioactive contaminants in coal ash from all three major U.S. coal-producing basins.
Sep 02, 2015 in Environment
Mining sites are considered as some of the most dangerous workplaces in the world. The operation of large machines with limited visibility poses a constant threat to both miners and their machines, to the point where, in ...
Sep 02, 2015 in Engineering