hydraulic mining

American  

noun

1. placer mining using a pressurized stream of water.

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Etymology

Origin of hydraulic mining

An Americanism dating back to 1855–60

Example Sentences

This practice, known as hydraulic mining, devastated the landscape and eventually led to the first environmental law enacted in the nation, according to the state parks department.

From New York Times

Starting in 1853, hydraulic mining operations that used high-pressure jets of water to blast away at mountains to uncover gold devastated the environment.

From National Geographic

The federal government first built the dam in 1906 as a way to stop the seemingly endless flow of debris left over from hydraulic mining during the height of the Gold Rush of the mid 1800s.

From Seattle Times

Then came the Gold Rush, with hydraulic mining that choked creeks with gravel.

From New York Times

Later, hydraulic mining washed entire hillsides into the cascading Trinity River.

From Los Angeles Times