hardrock

/ ˈhɑːdˌrɒk /

adjective

1. (of mining) concerned with extracting minerals other than coal, usually from solid rock

noun

1. slang.
   a tough uncompromising man

Example Sentences

Hundreds of thousands of “orphaned” oil and gas wells and abandoned coal and hardrock mines pose serious safety hazards, while causing ongoing environmental damage.

From Seattle Times

She holds the female record at Western States, Hardrock and UTMB; she has not been beaten by a woman in any race since 2019; she routinely finishes in the top 10 regardless of gender; and she once won a 240-mile race outright.

From BBC

The White House plan would impose a variable 4% to 8% net royalty on hardrock minerals produced on federal lands.

From Washington Times

Undeterred by such political reality, an interagency working group - led by Interior - touted the benefits of imposing royalties on about 750 hardrock mines on federal lands, mostly in the West.

From Washington Times

The rejections were rare for the industry — in the case of the Pebble Mine, it was the first time that the Clean Water Act was used to stop a hardrock mine.

From Salon