UNT Libraries Government Documents Department - 6 Matching Results

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Artesian Well Borer.

Description: Patent for a new and improved artesian-well borer. This design "will be actuated by the weight of the connecting-rods and sink-wells in rock, gravel, earth, or sand without the use of water" (lines 13-16). It consists "[i]n an earth or rock auger, the combination, with a tube and a shank reciprocating in said tube and adapted to operate the auger, of dogs adapted to be projected through the tube by the reciprocation of the shank to engage the well-casing and hold the said tube from rotary movem… more
Date: January 20, 1891
Creator: Logan, Thomas H.

Chispa Sheet

Description: Topographic map of a portion of Texas from the United States Geological Survey (USGS) project. The map includes towns, historic or notable sites, bodies of water, and other geologic features. Scale 1:125000
Date: 1895
Creator: Geological Survey (U.S.)
Location: 30.75 -104.75

Chispa Sheet

Description: Topographic map of a portion of Texas from the United States Geological Survey (USGS) project. The map includes towns, historic or notable sites, bodies of water, and other geologic features. Scale 1:125000
Date: 1897
Creator: Geological Survey (U.S.)
Location: 30.75 -104.75

Eagle Mountain Sheet

Description: Topographic map of a portion of Texas from the United States Geological Survey (USGS) project. The map includes towns, historic or notable sites, bodies of water, and other geologic features. Scale 1:125000
Date: 1897
Creator: Geological Survey (U.S.)
Location: 30.75 -105.25

Fort Hancock Sheet

Description: Topographic map of a portion of Texas from the United States Geological Survey (USGS) project. The map includes towns, historic or notable sites, bodies of water, and other geologic features. Scale 1:125000
Date: 1894
Creator: Geological Survey (U.S.)
Location: 31.25 -105.75

Sierra Blanca Sheet

Description: Topographic map of a portion of Texas from the United States Geological Survey (USGS) project. The map includes towns, historic or notable sites, bodies of water, and other geologic features. Scale 1:125000
Date: 1895
Creator: Geological Survey (U.S.)
Location: 31.25 -105.25
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