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Mining Sulfur.
Patent for a method of mining sulfur and other things that have similar melting points that is less expensive and more efficient than previous methods. A machine sprays hot fluid at fissures where the mineral exists, melts it, and carries it away in the stream.
Date:
April 27, 1897
Creator:
Higgins, Pattillo & Carroll, George W.
System:
The Portal to Texas History