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.
(Image credit: Rich-Joseph Facun for NPR)
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.
(Image credit: Rich-Joseph Facun for NPR)