Sulfur-Mining
Description:
Patent for improvement on sulfur mining by which "sulfur is fused by a heated fluid forced down into the well to the vicinity of the sulfur deposit and when so fused the sulfur is forced to the surface of the ground through a return pipe" (lines 14-18).
Date:
December 17, 1918
Creator:
Carmichael, Robert E.
Item Type:
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Patent
Partner:
UNT Libraries Government Documents Department