Southern Arizona officials clash with Hobbs over copper mine

An Arizona land auction for a Canadian mining company's Copper World project faces opposition from residents and Pima County.

Selkirk Copper Expands Mineralization at Four Resource Zones at the Minto Copper-Gold-Silver Mine

Drilling at Minto East intersected multiple stacked mineralized lenses in a 90 m step-out from previous drilling, and remains ...

Gunnison Copper Corp.: Gunnison Copper Project PEA Technical Report Reporting Post-Tax NPV8 of ~US$2.0 Billion and IRR of 22.5% is Now Filed

Gunnison Copper Corp. (TSX: GCU) (OTCQB: GCUMF) (FSE: 3XS0) ("Gunnison" or the "Company") has filed the National Instrument 43-101 technical report ...
Milwaukee Journal Sentinel

What happens when a mine closes? A former Wisconsin mine has bloomed into a natural gem, but some see trouble below the surface

Despite appearing reclaimed, the Flambeau Mine site has ongoing groundwater contamination with arsenic and manganese, and Stream C has high levels of copper. While the mining company says the site is ...