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Atlas Mining & Milling Company Papers

Identifier: COU:69

Scope and Contents

The Atlas Mining Collection contains company records, such as bills, receipts, reports, cancelled checks, payrolls and vouchers from 1903 up until 1924 when the mine was closed. The collection also contains various books and pamphlets related to mining. The collections also contains bundles of employees’ time records and U.S. Government and Colorado local government publications. The collections contains 46 boxes, all of which include various different documents and records.

The collection includes, mining literature and reports, receipts from 1923, Babsons Reports and bills. Also included is a blueprint of profile for proposed aireal Tramway for Canon Creek Tramway Co. (Section Atlas Mine to Camp Bird Mill), Daily Mining Reports, mill assay reports, Employee Time Records, Correspondence 1906, 1909-1917, 1923. Cancelled Checks, Expense ledger from 1917, Bills in boxes from Jan-Sept 1918, Oct 1918-Feb 1919, Mar-July 1919, July-Dec 1919, Apr-Dec 1919, Company bills, 12 Letterboxes, 2 vouchers, 14 ledgers, 8 books


  • Creation: 1903 - 1924

Historical Note

The Atlas Mine was situated 8½miles southwest of Ouray, Colorado, in the Mount Sneffles Mining District. The mining district was located in the San Juan Mountains of southwestern Colorado. This important silver producer was located in June, 1876. Early owners were W.A. Clark and Fred Herbet, both of Ouray. The mine produced both silver and gold and employed over six hundred men. By the time the mine closed in 1924, it had produced gold and silver worth over $1 billion dollars in current value. Later, J.P. Sidwell of Chicago became the new president of the company with Fred Carroll as general manager. The mine was closed in 1924, but in 1936 a new corporation reconditioned the mine for new exploitation.

For more information see the information file.


30 linear feet

Language of Materials



The Atlas Mine was situated in the Mount Sneffles Mining District, just southwest of Ouray, Colorado, during between 1876 and 1926. Ouray, which was originally Uncompahgre City, was settled around 1875. The Atlas Mine was silver and gold producer. The collection contains various papers including the company’s correspondence, reports, bills, vouchers and ledgers relating the period 1903 to 1924; as well as a variety of books and pamphlets related to mining in the West.


A72 J2-3,I1-6; B-MC-2 Dr 4

Description rules
Describing Archives: A Content Standard
Language of description
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Repository Details

Part of the University of Colorado Boulder Libraries, Rare and Distinctive Collections Repository

1720 Pleasant Street
184 UCB
Boulder Colorado 80503 United States