Mineral Facts and Problems: 1960 Edition Page: 84
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MINERAL FACTS AND PROBLEMS, ANNIVERSARY EDITION
products, requirements will probably increase
and may reach 20,000 tons annually within the
next 10 years. According to reports, mining
and milling facilities in the Union of South
Africa are being increased. The demand for
amosite is expected to keep in advance of the
growing supply which will probably be inade-
quate through the short-term period, but
production may overtake the long-range
U.S. requirements for crocidolite have in-
creased greatly. The principal demand is for
the shorter grades used in making asbestos-
cement pipe. As facilities for pipe manufac-
ture are being greatly enlarged in the United
States, increasing requirements for blue asbes-
tos are in prospect; they may reach 30,000 tons
annually within the next 10 years. Commer-
cial deposits of crocidolite of the African type
are confined to the Union of South Africa and
Australia. Mining and milling facilities are
being enlarged in Africa, and a continuing in-
crease in production is anticipated. The de-
mand is so strong for the shorter pressure-
pipe grades that even a growing supply can
scarcely keep pace with it, and current short-
ages will probably continue at least throughout
the short-range period.
The outstanding asbestos problem at this
time is the dependence of the United States
upon foreign sources of supply. This has dis-
advantages from defense and self-sufficiency
The high cost of glass fibers that are techni-
cally satisfactory substitutes for amosite in heat
insulation is a problem and has prevented wide-
spread use of these materials. The lack of
commercially satisfactory substitutes for amo-
site is a general problem in this industry.
A problem that deserves attention is the cur-
rent lack of interchangeability of the various
types of asbestos. There is a need for more
information on the physical characteristics of
asbestos that determine the utility of individual
From time to time a shortage of spinning
fibers has been a problem.
The enormous quantities of waste at asbestos
plants create difficult disposal problems.
1. ASBESTOS. A magazine devoted to the asbestos
trade. Published monthly since July 1919, 808
Western Saving Fund Bldg., Philadelphia 7, Pa.
2. ASBESTOS TEXTILE INSTITUTE. IHandbook of Asbes-
tos Textiles. Philadelphia Pa., 1953, 78 pp.
3. BOWLES, OLIVER. The Asbestos Industry. Bureau
of Mines Bull. 552, 1955, 122 pp.
4. . Asbestos, A Material Survey. Bu-
reau of Mines Inf. Circ. 7880, 1959, 94 pp.
5. COMEFORO, J. E., AND KOHN, J. A. Synthetic As-
bestos Investigations. I. Study of Synthetic
Fluor-Tremolite. Am. Mineral., vol. 39, Nos. 7
and 8, July-August 1954, pp. 537-548.
6. HALL, A. L. Asbestos in the Union of South Africa.
Union of South Africa Geol. Survey Mem. 12, 2d
ed., 1930, 324 pp.
7. HOWLING, G. S. Asbestos. Imperial Inst. (Lon-
don) Mineral Resources Dept. Bull., 2d ed., 1937,
8. JENKINS, G. F. Asbestos. AIME Ind. Minerals
and Rocks, 2d ed., 1949, pp. 55-76.
9. KOHN, J. A., AND COMEFORD, J. E. Synthetic As-
bestos Investigations. II. X-ray and Other
Data on Synthetic Fluor-Richterite, Edenite, and
Boron Edenite. Am. Mineral., vol. 40, Nos. 5
and 6, May-June 1955, pp. 410-421.
10. KELLEHER, J. C. Milling Asbestos. Asbestos, vol.
27, 1945, No. 3, pp. 2-10; No. 4, pp. 3-10; No. 5,
11. MESSEL, MICHAEL J. Examination and Valuation
of Chrysotile Asbestos Deposits Occurring in
Massive Serpentine. Trans. AIME, vol. 173,
1947, pp. 79-84.
12. Ross, J. G. Chrysotile Asbestos in Canada, Cana-
dian Dept. of Mines, Mines Branch, No. 707,
1931, 146 pp.
13. SHELL, H. R., HATCH, R. A., AND BROWN, D. L.
Synthetic Asbestos Investigations. III. Syn-
thesis and Properties of Fibrous Potassium-Lead
Silicate. Bureau of Mines Rept. of Investiga-
tions 5293, 1957, 20 pp.
14. SHELL, H. R., COMEFORO, J. E., AND EITEL, W.
Synthetic Asbestos Investigations: Synthesis of
Fluoramphiboles from Melts. Bureau of Mines
Rept. of Investigations 5417, 1958, 35 pp.
15. SINCLAIR, W. E. Asbestos, Its Origin, Production,
and Utilization. London, 1955, 365 pp.
16. STEWART, LINCOLN A. Chrysotile-Asbestos Deposits
of Arizona. Bureau of Mines Inf. Circ. 7706,
1955, 124 pp.
17. . Chrysotile-Asbestos Deposits of Ari-
zona. (Supplement to Inf. Circ. 7706), Bureau
of Mines Inf. Circ. 7745, 1956, 41 pp.
18. VAN ROYEN, WILLIAM, AND BOWLES, OLIVER. Atlas
of the World's Resources. Vol. II. The Mineral
Resources of the World; chapter on Asbestos.
Prentice-Hall, New York, N.Y., 1952, pp. 166-169.
19. WIEBELT, F. J., AND SMITH, M. CLAIR. A Recon-
naissance of Asbestos Deposits in the Serpentine
Belt of Northern California. Bureau of Mines
Inf. Circ. 7860, 1959, 52 pp.
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United States. Bureau of Mines. Mineral Facts and Problems: 1960 Edition, report, 1960; Washington D.C.. (digital.library.unt.edu/ark:/67531/metadc38790/m1/92/: accessed July 24, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.