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Apparatus for Extracting Minerals from Ores.

Description: Patent for an apparatus that extracts minerals, especially sulfur, from ores. The apparatus features new and useful improvements, creating an automatic extraction that separates the minerals in a pure state.
Date: January 13, 1920
Creator: Shires, George M.
Partner: UNT Libraries Government Documents Department

Dry Separator

Description: Patent for a separator for mills designed to separate valuable material from extraneous material. Illustrations included.
Date: September 28, 1909
Creator: Snowden, Rene Ravenel
Partner: UNT Libraries Government Documents Department

[Enchanted Rock]

Description: Black and white photograph of an isolated rock hill known as Enchanted Rock. There are a few crumbly pieces of rock and several larger, angular boulders. Patches of shrubs and trees are visible on the right and near the depths of the area.
Date: unknown
Partner: Gillespie County Historical Society

Arlington Gem and Mineral Show

Description: Photograph of the Arlington Gem and Mineral Show in the armory at Randol Mill. People are gathered around small tables that display gems in a large room. There are signs for A. G. Parser, Inc. and Eckert Mineral Research Inc.
Date: 196X
Partner: Arlington Historical Society’s Fielder House Museum

Mining Sulfur.

Description: 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.
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
Partner: UNT Libraries Government Documents Department

Separating-Table

Description: Patent for a separating table for separating pulverized ore or other material "into its constituent elements" (lines 14-15).
Date: September 8, 1908
Creator: Sutton, Henry M.; Steele, Walter L. & Steele, Edwin G.
Partner: UNT Libraries Government Documents Department

Electromagnetic Ore-Separator.

Description: Patent for an electromagnetic ore separator, which reduces the risk of any valuable particles falling with the waste mineral material below the magnetic surface.
Date: February 16, 1909
Creator: Charlton, Thomas
Partner: UNT Libraries Government Documents Department

Tratments for Clays in Aggregates Used to Produce Cement Concrete, Bituminous Materials, and Chip Seals: Technical Report

Description: Report on a study to (1) determine what type and concentration of clay mineral will result in poor pavement performance, (2) to identify a quick field test to detect the presence of deleterious clay minerals in the stockpile, and (3) suggest remedial techniques to make the clay contaminated aggregates acceptable for use.
Date: August 2012
Creator: Texas A & M Transportation Institute
Partner: UNT Libraries Government Documents Department

Core-Drill.

Description: Patent for a core drill for making bore holes in rocks to get out solid samples of the inside of rocks, which has an improved grabbing method for retrieving the piece of rock inside the hole.
Date: August 3, 1909
Creator: McLoughlin, Malacha J. & Wynn, John S.
Partner: UNT Libraries Government Documents Department

[Letter from Perry Sayles to John Sayles, March 18, 1911]

Description: Letter from Perry Sayles to John Sayles stating he believes he did well on all his exams, and that he acknowledges the deed to El Paso. He believes the information needed is on the back of a letter sent to him. He mentions all tracts of land are classified as grazing and mineral, valued at $1.50.
Date: March 18, 1911
Creator: Sayles, Perry
Partner: Hardin-Simmons University Library

[Man at a Sulfur Mine]

Description: Black and white photograph of an unidentified man wearing a suit and a hat, standing amidst a massive pile of mineral rocks at a sulfur mine. He is holding a rock in his hands and observing it. A handwritten inscription on the back reads: "Hoiskoleforstander A. Gronborg foran et Svovlbjerg ved Gulf Svovlmine." An online translation endeavor provided a few potential conclusions: that the man in the picture has the name A. Gronborg and that he is indeed standing by a sulphur mine in the gulf (presumably in Texas). The only established Texan city in Wharton County with a sulphur mine is Newgulf, Texas.
Date: unknown
Partner: Danish Heritage Preservation Society

[Letter from H. F. Dolan, 1924]

Description: Letter advertisement from H. F. Dolan of Walter I. Rand Diamonds and Precious Stones, introducing a book about Rand's exploits and encouraging the recipient to make a purchase of exotic minerals.
Date: 1924
Creator: Dolan, H. F.
Partner: Private Collection of the CC Cox Family

Texas Almanac, 1947-1948

Description: The almanac covers general topics about the state of Texas including statistics for individual counties, agriculture, weather, "resources, industries, commerce, history, government, population and all other subjects relating to the political, civic and economic development" of the time. A general index is on page 581.
Date: 1947
Partner: Texas State Historical Association
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