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1866-1868

Browne, J. R. 1866-1867, Report upon mineral resources of States and Territories west of Rocky Mountains: Washington, U.S. Dept. of the Treasury. (Annual volumes for 1866 1867.)

The annual report of the U.S. Commissioner of Mining Statistics; continued by R.W. Raymond.

1869-1877

Raymond, R.W. 1869-1877, Statistics of mines and mining in the States and Territories west of the Rocky Mountains: Washington, U.S. Dept. of the Treasury. (Annual volumes 1869-1877.)

The annual reports of the U.S. Commissioner of Mining Statistics. Continued by Mineral Resources of the United States.

1880-1910

U. S. Bureau of the Mint. 1880-1910, Report of the Director of the Mint upon the production of gold and silver in the United States. (Separate reports for each year 1880 1910.)

The early history of mining in the United States was recorded in annual volumes produced by the Bureau of Mint. These volumes include information on individual mines with production figures. After 1910, production statistics are incorporated in the Annual Report of the Director of the Mint.

1882-1924

U.S. Geological Survey. 1882-1924, Mineral Resources of the United States: Washington, U.S. Geological Survey. (Separate reports for each year 1882- 1924.)

Mineral statistics for the years 1881-1923 were issued by the U.S. Geological Survey. The volumes were issued as part of the Annual report of the Geological Survey from 1894 to 1899. After 1924 the U.S. Bureau of Mines assumed responsibility for the mineral statistics.

1924-1931

U.S. Bureau of Mines. 1924-1931, Mineral Resources of the United States: Washington, U.S. Bureau of Mines. (Separate reports for each year 1924-1931.)

After 1924, the U.S. Bureau of Mines assumed responsibility for maintaining mineral production statistics, continuing the series formerly produced by the US Geological Survey. In 1932, the title of the annual publication became Minerals Yearbook.

1932-present

U.S. Bureau of Mines. 1932-present, Minerals Yearbook: Washington, U.S. Bureau of Mines. (Separate reports for each year 1932-present.)

A continuation of the series "Mineral Resources of the United States."

Annual summaries of mining activities and mineral production statistics.

1896-present

Annual report of the State Bureau of Mines. 1896-present, Denver: Colorado Bureau of Mines, Annual reports.

The State has maintained production statistics for each County since 1896. From 1967-1971 the report is titled: Summary of Mineral Industry Activity. The name of the Agency became Colorado Division of Mines in 1972.

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