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| исходная руда (The head grade of a randomly selected representative split (100-lb) of head ore, as determined by caustic fusion assay, was 0.082 opt gold ... | This dore bar also assayed with .19 ounces of gold per ton of head ore. The Company then used the Sundancer method to process 20 pounds ... | A one pound sample of black volcanic cinder ore (i.e., raw or "head" ore) from the "Sheep Hill Black Hole" cinder cone near Flagstaff, Arizona was assayed for gold. Alexander Demidov) | |||