The company operated several mining sites, including at Deadwood, after driving a three thousand foot tunnel, the Golden Fleece Tunnel, and one mine near Georgetown, Clear Creek County, Colorado,[1] The company reportedly also held some interests in gold mining in Cave Creek, Arizona.[2]
In September 1892, George W. Peirce, the company's treasurer, bought the Golden Fleece Mine (Colorado) for $50,000.,[3][4] During that year the company seems to have raised its capital basis to finance its expansion. Probably the new capital stock of $600,000 was organized under another company, which was incorporated in Iowa in 1893, under the same name of Golden Fleece Mining and Milling Company (Iowa).
- ^ Gold mines and mining in California : a new gold era dawning on the state, ..; G. Spaulding & Co., 1885, p. 270-271.
- ^ Daily Democrat, Aug. 4, 1884: Death of the Well-Known Merchant, John O. Marsh.
- ^ Richard Walker Holmes, Marrianna B. Kennedy: Mines and minerals of the Great American Rift (Colorado-New Mexico), Van Nostrand Reinhold, 1983, p. 180-185; ISBN 0442280386, ISBN 9780442280383.
- ^ Engineering and Mining Journal, vol. 145, 1944, p. 102 (ISSN 0095-8948, CODEN ENMJAK).