Court weighs request to pause Hermosa work on federal land

A ball mill at South32 Hermosa that will be used to grind and pulverize mined zinc ore — described in layman's terms as giant rock tumbler. Collins set briefing deadlines through late October, with a decision from the court expected in early November, according to South32 Hermosa President Pat Risner.

A federal judge is reviewing a motion by environmental groups seeking to pause federally approved work on the South32 Hermosa mine expansion near Patagonia.