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Lead and Zinc Availability - Domestic. A Minerals Availability Program Appraisal.

Authors
Kilgore-CC; Arbelbide-SJ; Soja-AA
Source
MISSING :30 pages
Link
NIOSHTIC No.
10003294
Abstract
The Bureau of Mines investigated the availability of lead and zinc from 104 domestic mines and deposits. Fourteen primary lead and fifty-three primary zinc operations with in situ demonstrated resources containing 27.3 million metric tons (t) of lead and 53 million t of zinc were subsequently evaluated. Potentially 17.5 million t of lead and 2.4 million t of byproduct zinc could be recovered from 14 primary lead operations. Economic evaluations performed in constant January 1982 dollars determined a long-run total cost per pound of recoverable commodity. Including a 15-pct discounted-cash-flow rate of return (dcfror), 59 pct of primary lead was potentially available at or below $0.32 Per pound of lead. Potentially 40 million t of zinc and 5.6 million t of byproduct lead could be recovered from 53 primary zinc operations. Ninety percent of the recoverable zinc is potentially available from currently nonproducing mines and deposits, and a weighted average of their long-run total costs was determined at $0.98 Per pound of zinc. At a break-even (o-pct) DCfror, these nonproducing operations had a weighted average long-run total cost of $0.58 Per pound of zinc. Sensitivity analyses illustrated that operations that recover byproducts were most sensitive to fluctuating metal prices, producing operations were more sensitive to increased smelter treatment charges, and nonproducing operations were impacted most by the DCfror.
Publication Date
19830101
Document Type
IH; Information Circular;
Fiscal Year
1983
NTIS Accession No.
NTIS Price
Identifying No.
IC 8962
NIOSH Division
DRC;
Source Name
MISSING
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