Dirty Great Machines - Down-The-Hole Drilling | Technology Documentary | Reel Truth. Science

Описание к видео Dirty Great Machines - Down-The-Hole Drilling | Technology Documentary | Reel Truth. Science

Kidd Mine in Ontario, Canada plunges 200 miles underground and is the deepest base metal mine in the world. The miners use a technique called blast hole mining to extract metal and use state of the art Down-The-Hole Drills located beneath the surface to make holes at almost any angle.

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