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The National Geographic Magazine Map of Alaska : showing latest explorations by U.S. Geological Survey and U.S. Coast and Geodetic Survey.

Description: Map shows proposed and existing railroads, steamship lines, glaciers, volcanoes, telegraph and cable lines, postal routes, military reservations, settlements, missions, mining activity and mineral resources. Includes explanations. Inset: "Western Extension of Aleutian Islands." Relief shown by hachures and spot heights. Scale [ca. 5,000,000].
Date: 1914
Creator: National Geographic Society (U.S.)
Item Type: Refine your search to only Map
Partner: University of Texas at Arlington Library

Map of the Iditarod placer fields, Alaska, 1910.

Description: Map shows early twentieth century Alaska settlements, trails, travel distances, settlements, and placers; course of Iditarod River, Otter and Bonanza Creeks, and tributaries; porphyry dike location and surrounding watershed. Relief shown by hachures. Scale [ca. 1:110,000].
Date: 1910
Creator: Dodds, C. B.
Item Type: Refine your search to only Map
Partner: University of Texas at Arlington Library

State Mine Inspector of Texas Annual Report: 1914

Description: Annual report of the State Mine Inspector of Texas describing the status of coal mining, including statistics about mines that have closed or are in the process of opening, fatal and non-fatal accidents, state regulations, and characteristics of open mines.
Date: 1915
Creator: Texas. State Mine Inspector.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department

Tube-Mill.

Description: Patent for improvements in tube-mills (employed for ore and other substances) which is meant to help support and drive rotating drums or cylinders of the mills allowing for more full appearances.
Date: October 1, 1918
Creator: Bergman, Julius G.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Under-Drilling Bit.

Description: Patent for improvements in the design of under drilling bits in order to "reduce labor, time and expense of drilling" and "to permit the drilling of a more perfect hole" (lines 25-27), including illustrations and a description of the design.
Date: July 15, 1913
Creator: English, Harry White
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Mineral-Prospecting Apparatus.

Description: Patent for an "apparatus for drilling and obtaining samples or specimens of minerals" (lines 12-13), and obtaining accurate samples of ores in situations where they would otherwise be washed away by water or broken apart. The patent includes illustrations.
Date: August 26, 1913
Creator: Andrews, Benjamin
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Process of Separating Ores &c

Description: Patent for a process of separating oxid or carbonate metallic ores from a surrounding mineral through the use of a mixture of an oily liquid, water, and an alkali metal.
Date: November 12, 1912
Creator: Lockwood, Alfred Arthur
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Process of Leaching Copper Ores

Description: Patent for "a method of recovering copper by the electrolysis of copper solutions of any suitable kind, obtained by the lixiviation of the ore" (lines 9-12). The improvement in this method is that almost all the sulfuric acid and other leaching agents are used up prior to the copper going to the electrolysis tanks which increases the amount of copper recovered and the reduction of accumulated biproducts.
Date: October 22, 1918
Creator: Hahn, Albert W.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Sulphur-Mining Apparatus.

Description: Patent for a thermal solvent based sulfur mining apparatus that is placed in a sulfur mining well. Utilizing thermodynamics, the apparatus has a new way to introduce air or steam into the various parts of the apparatus. It is designed with "simplicity and durability of construction" (lines 49-50).
Date: December 17, 1918
Creator: Carmichael, Robert E.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Half-Car Unloader

Description: Patent for an improved and simplified mechanism of Half-Car Unloaders, which unloads earth materials such as coal and ore from a railroad car more easily and effectively by lifting up a train car, unloading its contents, and placing it back on the railroad track.
Date: February 9, 1915
Creator: Scardino, Mario P. & Scardino, Peter
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Grapple

Description: Patent for providing a cheaper version of removing pipes or tubing from wells.
Date: March 18, 1913
Creator: Drake, Charles W.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Drill-Cutter.

Description: Patent for new and improved drill cutter for rotary boring drills including exact description and illustrations.
Date: November 4, 1919
Creator: Godbold, Louis A. & Fletcher, Harold W.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Drill-Bit

Description: Patent for Drill-Bit that is especially designed for purpose of drilling through rock, or other hard formations and is also adapted for use in drilling through softer formation, such as shell.
Date: June 10, 1919
Creator: Culmore, March J. A.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Drill-Support.

Description: Patent for "new and useful Improvements in Drill-Supports, of which the following is a specification. This invention relates to drilling apparatus, and more particularly to an apparatus of this character for use in coal or other mines for boring or drilling holes for blasting charges and other purposes" (lines 6-13).
Date: November 23, 1915
Creator: Williams, Benjamin F. & Mayfield, James W.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Rock-Drill.

Description: Patent for a composite rock drill composed of granular metal or minerals held together in a binder to present sharp points for the efficient drilling of rock and other substances.
Date: April 1, 1913
Creator: Blackburn, Julian E.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Roller-Drill

Description: Patent for a roller drill for drilling deep into rocks which bores small holes and is stronger than other models of roller drills.
Date: May 31, 1910
Creator: Hughes, Howard R.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Roller-Drill

Description: Patent for a roller drill for boring holes into rocks which is stronger than other roller drills and is constructed differently than his previous patent for a roller drill.
Date: May 24, 1910
Creator: Hughes, Howard R.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Rotary Boring-Drill.

Description: Patent for improvements to rotary boring drills that enable a drill to be assembled and disassembled without a tool and that ensure the removable cutters do not come off during operation.
Date: June 26, 1917
Creator: Hughes, Howard R.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Rotary Boring Drill

Description: Patent for an improvement in rotary boring drill that will prevent head from wobbling sideways in the hole being drilled.
Date: March 7, 1916
Creator: Hughes, Howard R.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Process and Apparatus for Separation of Ores by Flotation.

Description: Patent for a improved process and apparatus use commercially to separate ores using flotation. By "introducing a novel step in the flotation process which results in the complete breaking down of the froth and at the same time keeping the volume of water used within the smallest practical limits thus preventing the washing away of valuable concentrates by an unnecessarily large volume of water" (lines 54-60).
Date: April 18, 1916
Creator: Thompson, W. Albert & Cole, David
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Earth-Auger.

Description: Patent for a device that drills into the ground and lifts the contents into a metal container. The hand-operated device also has wings that expand to let the user know when to empty the contents.
Date: April 10, 1917
Creator: Phillips, Dave T.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Frame for Jaw Crushers

Description: Patent for "new and useful Improvements in frames for Jaw-Crushers (lines 8-9) including illustrations.
Date: March 25, 1919
Creator: Easton, William B. & Cole, David
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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