Copper mining and smelting
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"An open-pit copper mine in operation illustrates the main steps in extracting pure copper from ore. We see the processes of blasting, loading and disposing of waste rock, loading ore on railroad cars, crushing and washing. The work of miners in their various jobs at the mine is emphasized."-Educational Film Guide (1950)
Complete catalog record
Sources
- 16mm Filmography (legacy record) — title, year, description, catalog record
Original permalink · Record added 2025-04-19 21:54:35