Parallel rails had long been used in mining operations to move bigger loads, but horses were still the primary source of power.

在采矿作业中，平行铁轨早已被用来运送大件的货物，但马匹仍然是主要的运输工具。

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Used in mining, cement, metallurgy, coal, construction, highway and chemistry industries.

适用于矿山、水泥、冶金、煤炭、建材、公路、燃化等行业。

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Products are widely used in mining, cement, metallurgy, shipbuilding, construction and other industries.

产品广泛应用于矿山、水泥、冶金、造船、建筑等行业。

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Ammonium nitrate, a solid fertilizer composed of ammonia and nitrogen, is also a component of explosives widely used in mining.

CNN: 12 bodies recovered, 60 unaccounted for after Texas blast

But he put his training to work, filling empty iron- and copper-ore ships with lime and selling it to mines that exported the ore (lime is used to neutralize acid used in mining).

FORBES: Magazine Article

Founded in 2004 and grown organically to 25, 000 users across almost a hundred organizations, Yuster stressed repeatedly that no personal data is captured or used in the mining process.

FORBES: Jerry Maguire Didn't Sell Smart