a Official.
& Min. World, Feb. 6,1915. o Estimated.
d Director Mint Ann. Kept., 1914. (Africa includes Transvaal, Khodesia, West Africa, Congo, and Madagascar.) e Min. Mag., April, 1915. / Min. Mag., August, 1914. g Min. Jour., Dec. 5,1914. ft Mineral Industry, 1914.
• Min. and Sci. Press, May 8,1915.
* Includes estimates for countries not specified.
The
figures above given for the years 1903 to 1912, inclusive, are from the
reports of the Director of the Mint. It has been impracticable for the
Bureau of the Mint to compile a table of world's figures for 1913 and
1914 and compilations have therefore been made by the Survey, from
available sources and necessarily including estimates where complete
data are lacking.
The
figures show a steady increase of total world's output, from S327, 702,
700 in 1903 to $466,136,100 in 1912, followed by a decrease to
$454,942,211 in 1913, and a probable further decrease to about
$453,000,000 in 1914. The indications, however, do not point to a
continued decrease in 1915, for increased activity at the great Rand
mines, in the Transvaal, South Africa, promises to offset decrease
probable elsewhere due to shortage of labor because of the European war
or for other reasons.
A
survey of the statistics for the last 12 years shows the rapidly
increasing actual output and proportion of the total yield of Africa,
