Sentence examples for rock ore from inspiring English sources

The entire process for artisanal mining is intensive, but the women do get a good proportion of the gold held within the small rock ore.

Thus the raw rock ore becomes easier to be fragmented, which provides advantageous conditions for roadheader to cut high stress hard-rock.

It can therefore generally be said that biotic raw material demand only has a major impact on agricultural products and other materials that are based on organic input, while abiotic raw material demand significantly contributes to rock, ore, and fossil fuel-based materials.

In May, the government pledged close to US$5 million to clean up areas that had been contaminated with lead during artisanal gold mining operations because of high levels of lead in rock ore.

Since 1880 hard-rock ore minerals have been mined in Alaska, more than nine-tenths of which yield gold, copper, zinc, and silver.

To solve this problem, numerous hardened metals and advanced technologies are used to resist the wear from hard substances such as coals, rocks or ores.

A joint program with the Department of Earth and Environmental Engineering offers the opportunity for graduate instruction in mineral economics or integrated research of geology with mining geophysics, rock mechanics, ore dressing, hydrometallurgy, alternate energy resources, or materials science.

There is interest in using MPS bacteria for industrial bioprocessing of rock phosphate ore (a substituted fluroapatite) or even for direct inoculation of soils as a 'biofertilizer' analogous to nitrogen fixation.

The problem of modeling displacements in the coal or ore rock mass shows considerable advantages of a model based on Knothe influence function model.

However, as mentioned in the method section, the extraction of metal, for example includes the extraction of rock and ore, so that the material footprint for 1 kg of extracted metal will be calculated as much higher than that for 1 kg of easy-to-extract rock or soil.

The wide-body mining dump truck is a type of heavy-duty, off-highway truck that is mainly used for transporting rock and ore in open-pit mines.