钻孔者在烤架上填满光线的胶片。
钻孔者，爆破工？表层采矿，采石和建筑。
Drillers and Blasters? Surface Mining, Quarrying and Construction.
天然气生产者已经通过水平钻孔技术和水力破碎技术的结合从页岩结构中开采天然气，从而来增加天然气供应和可恢复储备。
Producers have boosted supplies and recoverable reserves in the United States by combining horizontal drilling with hydraulic fracturing, also called fracking, to produce gas from shale formations.
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