29 abril 2015
Silica dust hazards in large gold mines have been well documented, but the situation is far worse in small-scale gold mining according to a new study. This is the first ever study to measure silica exposures in small-scale gold mining operations.
http://feeds.sciencedaily.com/~r/sciencedaily/~3/lruPXUmbfGU/150429182148.htm
