Next to the mine is the Berkeley Pit, which is filled with 50 billion gallons of a highly acidic, toxic brew. Montana Resources pipes liquid from the pit, enabling it to cascade onto piles of ...

SB306, sponsored by Sen. Terry Murphy, R-Cardwell, amends the 1998 ban by saying any new or existing open-pit mine can process its ore at cyanide heap-leach operations that existed in 1998 and ...

Mako Mining operates the San Albino Mine in Nicaragua, one of the highest-grade open-pit mines in the world. More precisely, milled grade in Q1 '25 averaged 7.1 g/t.

About 200 activists demonstrated this Sunday in the capital of Panama against the possible reopening of the largest open-pit mine in Central America, owned by a Canadian company, which was shut down ...

Contamination found in lakes and creeks The open pit mine extracts 11 million tons of ore per year. If it’s expanded to include an underground mine, that could increase to 15 million tons per year.

The CuMo Exploration Project, eyeing an open pit mine near Bogus Basin outside Boise, would harm the environment and extract Idaho wealth.