alluvial mining

British  

noun

1. a method of extracting minerals by dredging alluvial deposits

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Example Sentences

Residents of La Toma have long practiced both alluvial mining — panning in the Ovejas for gold washed down from the hills — and digging for ore in tunnels cut deep into dirt and rock.

From Los Angeles Times • Sep. 25, 2022

The contrast between the modern new plant, based in the town of Koidu, and traditional hand-dug alluvial mining could not be more stark.

From BBC • May 21, 2012

In framing the licensing regulations, the advisers of the Crown had thought only of the possibilities of alluvial mining.

From The Great Events by Famous Historians, Volume 17 by Horne, Charles F. (Charles Francis)

Hydraulicing is the cheapest form of alluvial mining, but can only be profitably carried out where extensive drifts, which can be worked as quarry faces, and unlimited water exist in the same neighbourhood.

From Getting Gold: a practical treatise for prospectors, miners and students by Johnson, J. C. F. (Joseph Colin Frances)

Several of the alluvial mining companies are getting gold in increased quantities.

From A Boy's Voyage Round the World by Smiles, Samuel