Preliminary Report Volume 4-5 (Paperback)

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1918 Excerpt: ...is in type metal. At present large amounts are used in making bullets, shrapnel, etc., the antimony hardening the lead. Antimony sulphide is used in smoke bombs and primers of shells and' cartridges. Babbitt and other anti-friction metals are important alloys. Antimony compounds are used in the manufacture of color pigments aud paints, and in medicine. Prices. The antimony market is unsteady and prices paid for ore subject to considerable fluctuation, conditions which confine production to relatively high-grade deposits. Were there no danger of overproduction and lowering of prices, undoubtedly some form of concentration applicable to lower-grade deposits would be introduced. The supposition that this may become feasible at some of the California properties, owing to the effect of the war on the world's metal markets, does not seem unreasonable. In 1915 from $1.00 to $2.10 per unit was paid for ore of a minimum of 50% antimony and later lower grades were accepted. The price per unit often follows a sliding scale, increasing slightly for highergrade ores. The introduction of the term "Unit" in the buying of certain ores has sometimes been confusing. The corresponding value per ton of the ore may be determined by considering that a "unit" represents each 1% of antimony in the ore. If on analysis the ore shows a content of 60% antimony, and the price quoted is $1.50 per unit, the value will be (60 $1.50) or $90.00 per ton. By some the term unit is used to represent each 1% of a ton or 20 lbs. Using the same quotation and percentages as above, then at $1.50 an ore showing 60% antimony would be worth 60% of $1.50 or $.90 per unit of 20 lbs., equivalent to $90.00 per ton of 2000 lbs. ' The long ton (2240 lbs.) commonly us...