returns for 1922 indicate a production of 39 troy ounces of crude
placer platinum in Alaska, 916 ounces in California, and 53 ounces in
Oregon, a total of 1,008 ounces for the United States. Comparable
figures for 1921 are: Alaska, 65 ounces; California, 821 ounces;
Oregon, 91 ounces.
refiners report purchases of domestic platinum in 1922 as follows:
Alaska, 41 ounces; California, 918 ounces; Oregon, 95 ounces;
Washington, 4 ounces—a total of 1,058 ounces, which is 37 ounces more
than was purchased by refiners in 1921. Eefiners also report purchases
of 63,482 ounces of foreign crude platinum in 1922— 12 ounces from
Canada, 53,385 ounces from Colombia, and 10,085 ounces from Russia. As
reported by the Bureau of Foreign and Domestic Commerce, Department of
Commerce, the imports of platinum from Colombia during 1922 were
37,230 ounces and the total imports of unmanufactured platinum 94,591
REFINED PLATINUM METALS.
of refiners of crude platinum, gold bullion, nickel, and copper
indicate that 57,718 ounces of platinum metals were recovered from
these sources in 1922, an increase of 1,348 ounces, as compared with
recoveries in 1921.