๐”– Bobbio Scriptorium
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Investigation of Colorado low-grade ores

โœ Scribed by R.R Hornor; W.H Coghill


Publisher
Elsevier Science
Year
1921
Tongue
English
Weight
42 KB
Volume
191
Category
Article
ISSN
0016-0032

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๐Ÿ“œ SIMILAR VOLUMES


Treatment of tungsten ores of boulder co
โœ J.P. Bonardi; J.C. Williams ๐Ÿ“‚ Article ๐Ÿ“… 1922 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 103 KB

UNTIL the end of 1918, Boulder County, Colorado, ranked as one of the principal tungsten-producing d~stricts of the world, but in August, 1919, there was practically no production, due to decline in demand, decrease in price, and large importations. The tungsten in this district occurs almost entire