Difficulty Swallowing (Dysphagia) 1  Print. 2  PDF. 3  Email. 4  Bookmark You must be signed in to bookmark pages. Sign in now. 5  Notes You must be signed into your pro account to make notes. Sign in now. 6  Listen Listen. 7  Translate Translate.
Miner Claudio Yanez applauds as he is carried away on a stretcher after being rescued from the collapsed San Jose mine where he had been trapped with 32 other miners for over two months in 2010 near Copiapo, Chile.
Two years earlier, runoff from a gold mine near Dadong contaminated the water supply for more than 200,000 people. Over the years, similar disasters have occurred in Spain, Peru, the Philippines, and elsewhere, and there are plenty of other sites in China that scientists have their eye on.