Mining and Scientific Press, Vol. 12, No. 11, p. 166 (March 17, 1866)

Excerpt from " MINING SUMMARY" Contra Costa.

A new interest appears to have recently been awakened with regard to the copper mines of Mount Diablo. Quite a number of new and promising ones have been located within the past two months, and old and abandoned claims re-located by new parties, who appear determined to give them a more thorough examination. According to the Contra Costa Gazette, the Keokuk has been steadily worked over ever since its location, and quite recently a well defined vein has been struck, showing a considerable quantity of good ore. Of the claims recently located, favorable reports are heard from the Tecumseh, the Reconstruction, the Nucleus, and the Wahhooken. The lode of the latter is clearly defined. A prospecting tunnel has developed a good body of ore, one ton of which has been sent to this city, sampled, assayed, and proved to be of a quality that will pay handsomely to the mine. Work upon this mine is conducted under the superintendence of Richard Williams, Esq., a gentleman of much practical experience in mining.

Return to Mines of Mt. Diablo Collection Index