Short term fish do feed off the tailings coming out of the sluice box, long term you just made a waste land of the river bottom. People really need too look at the effects of in river suction dredging. Hi banking is another term for hydraulic mining. The Chetco river had a person from WA put claims on 24 MILES of the wild and scenic section of the Chetco .IT'S in the courts now ,some of the locations were in State Parks. I'm not a tree hugger just an old fisherman that's seen the mining effect on the Trinity River, American, Klamath ,Scott ,Rogue and more. Why is the Pebble mine bad and it's OK to mine WA,OR and CA river's?