Petersburg Pilot -

JUNEAU, Alaska (AP) — Federal lawmakers have been urged by tribes and local conservation groups to address transboundary mining, which some consider a threat to southeast Alaska.

Transboundary mining is when run-off from a mine in one country pollutes water that eventually flows into another country.

The dams in Canada holding back toxic wastewater from the mining process have failed before in 2014 when the Mount Polly Mine in British Columbia spilled millions of gallons of industrial waste into nearby waterways in southern British Columbia, the Juneau Empire reported.

“I always say, wh...