Premier Danielle Smith says Alberta won’t allow open-pit mines, a stance that has drawn praise from environmental groups. Smith, speaking Saturday on her weekend radio show, said the province ...

Acid mine drainage is a highly toxic pollutant created when sulfur-bearing pyrite in rock is exposed to oxygen and water during mining. The drainage then oxidizes and creates sulfuric acid and ...

The President of Panama, José Raúl Mulino, on Thursday lashed out at environmentalists who oppose a possible reopening of a Canadian‑owned open‑pit copper mine, whose operations were halted by the ...