Manuscripts
The Spencer operation on the San Juan. Crushing the Wingate. Plant at Camp Ibex. Men at top are feeding rock to the crusher. The single cylinder Otto gas engine is furnishing the power
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Early construction at Camp Ibex for the crushing of the Wingate Sandstone and the washing of the slimes for gold
Manuscripts
mssMarston papers V126/0060
The gas engine, a pulley and in the background- the rock crusher. Spencer's Camp, San Juan River
Manuscripts
mssMarston papers V126/0088
