© 2010 travelblog.orgShaft Drill Core 1935-36
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Shaft Drill Core 1935-36
North America » United States » California » Nevada City
From: North America » United States » California » Nevada City
Blog: Nevada City, Queen City of the Northern Hills
Photographer: Cool Travelers (Al & Holly Rodriguez)
About this photograph:
Experimental vertical shaft 5' in diameter to 1,125' depth thru serpentine and gabbro at Idaho-Maryland Gold Mine, Grass Valley. Greatest drilled footage - 21' in three days. Core weight 11 tons.
From: North America » United States » California » Nevada City
Blog: Nevada City, Queen City of the Northern Hills
Photographer: Cool Travelers (Al & Holly Rodriguez)
Shaft Drill Core 1935-36
Experimental vertical shaft 5' in diameter to 1,125' depth thru serpentine and gabbro at Idaho-Maryland Gold Mine, Grass Valley. Greatest drilled footage - 21' in three days. Core weight 11 tons.
TB Code: [photo=51366]