Sentence examples for during the mining of from inspiring English sources

These waste dumps were created during the mining of hard coal in the Czech part of the Upper Silesian Basin.

Scientists believe this explains why oil companies have not bothered to collect much of the helium released to the air during the mining of natural gas.

Anhydrous fracturing methods which increase permeability during the mining of coalbed methane (CBM), shale gas, etc. are promising techniques for future development.

A serious problem encountered during the mining of association rules is the exponential growth of their cardinality.

When another large tailgate burst occurred during the mining of the D-3 panel, however, it was well in by this zone.

Figures 9 and 10 show mine gas emission rates, ventilation and return air rates, and gas concentrations during the mining of the panel 1112 1).

Adverse health effects of asbestos have been documented worldwide for the better part of the last half-century, with a large number of studies focused on occupational exposures received during the mining and processing of vermiculite ore.

That is a pretty sizeable increase – growing almost as strongly as during the mining boom: Some of this increase in government income over four years will come from removing the tax free threshold for short-term migrant workers – expected to raise $535m – and from changes to the "zone tax offset to exclude 'fly-in fly-out' and 'drive-in drive-out' workers" that will raise $325m.

Also during the mining, crushing and washing of ore, huge quantities of fines are generated, majority of which end up into tailing ponds owing to their high alumina contents (∼10 15%).

for economic development should be considered during the mine life of 20 30 years and could have significant impact on CMR planning.

One of the main problems in mining operations is how to determine the optimal cutoff grades of ore deposits at different periods during the life of a mine, it can be considered based on one of the goals of maximizing annual profit or net present value extraction during the mining period.