The blockade signaled a new conflict just two weeks after the mining firm resumed operations.

The new conflict comes just two weeks after the mining firm resumed operations following another protest that forced Las Bambas to shut down for more than 50 days.

Ruling ends string of litigation for one of copper-nickel project's key permits.

The S&P/TSX Composite Materials Index is now negative for the year after peaking in mid-April.

For many years, it was the flagship mine of Hudbay’s Manitoba operations.

Mining stocks also slid, with BHP Group down almost 10% from the previous week, Glencore down 8%, and Freeport-McMoRan down 16%.

"Going forward, I don't think there will be a mine where Zambia will own less than 20%," mines minister Paul Kabuswe said.

Workers at Chile’s state-owned Codelco will start a nationwide strike on Wednesday to protest the government’s and the company’s decision to close a troubled smelter.