Quarrying

(noun.) the extraction of building stone or slate from an open surface quarry.

埃塞尔手打

• Perhaps quarrying would be a better term than mining in this case, as Edison's plan was to approach the rock and tear it down bodily. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
• It is commonly found in reefs or veins among quartz, and in alluvial deposits; it is separated, in the former case, by quarrying, crushing, washing and treatment with mercury. 佚名. 神奇的知识之书.

杰里米整理