Hardrock

Quick meaning: Hardrock is a noun meaning (mining) Rock containing ore from which minerals are extracted.

Meaning

(mining) Rock containing ore from which minerals are extracted.

More Meanings

1. (geology) Solid, nonporous rock.
2. A type of concrete that contains relatively small amounts of aggregate relative to the amount of cement.
3. (prison slang) An unregenerate criminal; a bully boy.

Example Sentences

The tension test specimens embedded to 45 mm (1 - 3/4 inch) in hardrock concrete generally failed when the tensile limit of the anchor itself was reached.

The federal system for "hardrocks," pursuant to the Mining Law of 1872, allows the discovery, location, and development of these minerals without payment to the federal government.

Its importance lies in the fact that hardrock areas cover the greater part of peninsular India. Moreover, many hardrock areas are drought-prone, making irrigation essential for reliable cropping.

In this context, you asked us to provide information on (1) which types of royalties the 12 western states assess on hardrock mining operations and (2) trends on imports and exports of hardrock minerals.

Word Forms

• hardrocks

Related Words

Related dictionary entries include anorthosite, wollastonite, lode, metallogenic, gossan, pyroxenite.

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