churn-drill ore

Игры ⚽ Поможем решить контрольную работу

Churn drill — The churn drill is a large drilling machine that bores large diameter holes in the ground. In mining, they were used to drill into the soft carbonate rocks of lead and zinc hosted regions to extract bulk samples of the ore. They were common in… … Wikipedia
Pine Point Mine — The Pine Point Mine is located west of Fort Resolution, Northwest Territories and east of Hay River, Northwest Territories, on the south shore of Great Slave Lake, Northwest Territories. Pine Point was a Mississippi Valley type deposit. [Guilbert … Wikipedia

Словари и энциклопедии на Академике