THOMASTON The Maine Department of Environmental Protection has two active enforcement cases against Dragon Products for possible violation of air emissions standards at its cement plant.
The Mine Safety and Health Administration s (MSHA) proposed rule suggests a decreased Permissible Exposure Limit (PEL) for respirable crystalline silica.
MSHA proposes new silica dust rule - WV MetroNews wvmetronews.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from wvmetronews.com Daily Mail and Mail on Sunday newspapers.
WASHINGTON, D.C. — The U.S. Mine Safety and Health Administration has proposed a more stringent silica dust exposure rule to protect miners. The United Mine Workers of America and Sen.