This section is from the book "Scientific American Reference Book. A Manual for the Office, Household and Shop", by Albert A. Hopkins, A. Russell Bond. Also available from Amazon: Scientific American Reference Book.
The production of crude barytes in 1902 was considerably in excess of that of the year before, amounting to 61,668 short tons, valued at $203,154, as compared with 49,-070 tons, valued at $157,844, in 1901. This is an increase of 12,598 tons in quantity and of $45,310 in value.
The domestic production of cobalt oxide in 1902 was 3,730 pounds, valued at $6,714, as compared with 13.360 pounds, valued at $24,048, in 1901, a decrease in quantity of 9,630 pounds. All the cobalt oxide was obtained as a by-product in smelting lead ores at Mine Lamotte, Mo.
The Commercial production of mineral paints in 1902 amounted to 73,049 short tons, valued at $944,332, as compared with 61,-460 short tons, valued at $789,962, in 1901. The production of crude mineral paints in 1902 is reported as 35,-479 short tons, valued at $360,885, including 4,500 tons, valued at $18,000, of ocher and metallic paint reported as mined but not marketed in 1902.
The production of zinc white in 1902 amounted to 52,645 snort tons, valued at $4,016,499, as compared with 46,500 short tons, valued at $3,720,000 in 1901.