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Compressed-Air and Steam Apparatus for Sinking Wells
Patent for "a simple and inexpensive apparatus for drilling the rock and earth until sufficient loose material has accumulated in the shaft, and then remove such material by the pressure of an aeriform fluid - such as steam or compressed air" (lines 23-29).
Date:
July 16, 1889
Creator:
Goodrich, Hervey K.
System:
The Portal to Texas History