History of northwestern Magnesite Co., Chewelah, Wash., largest producer of magnesite in United States; quarrying operations and use of aerial tramway provided with 100 buckets each of 1200 lb. capacity, delivering 200 tons in 8 hr.
Aerial tramway transports raw material five miles to plant of northwest magnesite company
Pit Quarry
Pit and Quarry ; 19 , n 12
1930
7 pages
7 Figs.
Article (Journal)
English
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