The Red Chris Mine is already huge — at 89 square miles, it’s bigger than Wrangell Island. And the mine — which is just 25 ...

Cerro de Pasco Resources (TSXV CDPR / Frankfurt A2N7XK) conducted a program of 40 drill holes on the massive polymetallic ...

“The geochemical processes that might cause Li enrichments associated with pyrite are not well-understood…[but] using material from previous industrial operations (e.g., mine tailings or drill ...

There are piles of mine waste across the globe. Much of that waste is rich in low-grade metals, but they’re costly and complex […] ...

A Canadian environmental nonprofit group, long critical of the Red Chris Mine in the northern watershed of the Stikine River, has released a new report that cites increasing underground seepage of ...

The U.S. Forest Service is taking public comments about the agency’s proposal to spend about $1.2 million to deal with nine ...

(*) AgEq is calculated with Ag = $30/oz, Zn = $3,000/t, Pb = $2,000/t, Cu = $9,000/t, Au = $2,500/oz, Ga = $550/kg, and In = $350/kg (**) Results indicated as ‘> 15 ...

heat recovery systems and pyrite removal in mine tailings into our operations. “It also supports sustainable resource ...

“The United States was once the world’s largest producer of lucrative minerals, but overbearing Federal regulation has eroded our Nation’s mineral production,” according to the president’s order. “Our ...

Toxic tailings discarded at some 10,000 abandoned mines together with those currently being produced by 200 others in operation across Canada could hide a multi-billion-dollar market opportunity ...

The spill happened on Feb. 18 when a tailings dam that holds acidic waste from a copper mine in the north of the country collapsed, according to investigators from the Engineering Institution of ...