As coal miners suffer and die from severe black lung, a proposed fix may fall short krwg.org - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from krwg.org Daily Mail and Mail on Sunday newspapers.
For decades, miners have called for limits on highly toxic silica dust, which they're exposed to while mining. An investigation shows its impact and the weakness of proposed rules to protect them.