Sentence examples for mining operations had from inspiring English sources

There was some mineral exploitation in the Ashio Highlands, yielding copper and manganese, but mining operations had ceased by the mid-1970s.

Considering Indonesian coal seam conditions, only a few highwall mining operations had been conducted as shown in Fig. 6.

By 1910, however, most mining operations had ended, and it was closed in 1918.

Umbangtalad et al. (2007) found that Thai schoolchildren living near, but not working in, small-scale gold mining operations had increased urinary Hg concentrations.

We found that individuals who resided near uranium mining operations had a higher mean frequency of cells with chromosome aberrations and higher deletion frequency but lower dicentric frequency than the reference group, although the difference was not statistically significant.

The new mining operations have divided the region, in some cases setting brothers against each other.

But the idea of somehow reducing the influence of the largest mining operations has wide support.

The opening up of new mining operations has also restricted their territories.

She included a lesson on the rehabilitation of land after coal mining operations have stopped.

These rapid mining operations have imposed the need for change in level interval for higher productivity.

Regulators must not allow this to proceed until the enormous damage inflicted by past mining operations has been fully addressed.