Experience as a blaster helper in surface mining and quarrying or construction may be required for blasters.

爆破工需要具备地表采矿和采石或建筑爆破帮手的经验。

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These include coal mining, quarrying, oil drilling, and the injection of wastewater into the ground.

这些活动包括采煤、采石、石油钻探和向地下注入废水。

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They are employed by mining, quarrying and construction companies and by drilling and blasting contractors.

他们受雇于采矿，采石和建筑公司，也受雇于钻孔和爆破承包商。

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Eventually, some 150 illegal mining and quarrying companies in the area were shut down.

ECONOMIST: Rural activism

Manufacturing, which is one of the components of the index of production along with mining and quarrying, gas and electricity, and water and sewerage, fell 0.3% compared with the previous month.

BBC: Man in a factory producing tinsel

Although, by 1981, the proportion of Welsh employees working in mining and quarrying was just 3.8%, the coal industry still had a symbolic place at the heart of ideas of the Welsh nation.

BBC: Wales politics