Great study our from Than, documenting that Mining reduces fish populations.  Water quality is more important than the physical stream structure.

 

http://www.wvgazette.com/article/20140701/GZ01/140709912

 

Also, I just heard about a court case in Colorado where the judge ruled that the BLM and USFS had to consider the climate impact from the CO2 released from a mining lease on federal land.  That would be a game changer if it holds up.

 

JBK