Kirstin Brown, of the Colorado Division of Reclamation, Mining and Safety, talks about the Koehler Mine in 2016. The Sunnyside Gold Corp. paid for the mine to be bulkheaded as part of its consent decree with the State of Colorado. The fix appears to have worked. Jonathan P. Thompson photo.
In 1991, Echo Bay, a global mining conglomerate, announced that …
Continue reading this post for free, courtesy of Jonathan P. Thompson.
