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[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

Hoisting Bucket

Description: Patent for a clam-shell hoisting bucket that automatically opens and closes as it is lowered and elevated.
Date: October 21, 1902
Creator: Gearing, Charles M.
Partner: UNT Libraries Government Documents Department

Groundwater Availability Model for the Edwards-Trinity (Plateau) and Pecos Valley Aquifers of Texas

Description: This report describes the study area, previous aquifer investigations, and hydrogeologic setting used to develop the Edwards Trinity and Pecos Valley aquifers conceptual models, and provides details on the study and suggestions for future model improvements.
Date: April 2009
Creator: Texas Water Development Board
Partner: UNT Libraries Government Documents Department

Interview with Charles Passel, February 4, 1988

Description: Interview with Charles Passel, a geologist and Antarctic explorer. In the interview, Passel discusses his expedition to Antarctica with Admiral Richard Byrd, which he calls "the last romantic expedition."
Date: February 4, 1988
Creator: Passel, Charles & McCaleb, Gary
Partner: Abilene Christian University Library

Boring-Bit.

Description: Patent for a boring drill. The invention creates a new means "for connecting the constituent members of the head so as to provide novel means for assembling the head with a driving element" (lines 19-22).
Date: 1913-6-10
Creator: Larnce, John B.; Townsend, S. L. & Keith, Aubrey R.
Partner: UNT Libraries Government Documents Department

Pulverizing or Grinding Machine

Description: Patent for an improved, efficient pulverizing or grinding machine. Primarily used for pulverizing or grinding limestone and used is assistance with manufacturing cement, this improved machine focuses on a larger output through improvements in the cycling of surplus air.
Date: April 7, 1914
Creator: Steckle, Edward J.
Partner: UNT Libraries Government Documents Department

Ore Concentration.

Description: Patent for improvements in ore concentration. Improvements have to do with agitating ore pulp.
Date: November 18, 1913
Creator: Chapman, George Albert & Tucker, Stanley
Partner: UNT Libraries Government Documents Department

[Archeology Training on Kid's Day by The Southern Texas Archaeological Association]

Description: Photograph of four young girls learning about archeology from the Southern Texas Archaeological Association at the Texas Folklife Festival in San Antonio, Texas. They are kneeling around a black tarp covered with bowls, colanders, and a brown rectangular box filled with rocks. Bystanders, chairs, and sandboxes are visible in the background.
Date: [1999-08-05..1999-08-08]
Creator: Howard, Laura
Partner: UT San Antonio Libraries Special Collections

Mining Sulfur.

Description: Patent for extracting sulfur that is being mined from the stratum that has the minerals. A fluid medium, such as air or a heated liquid, is forced into the stratum which assists with the elevation of the liquid mineral. As the minerals come up the heated tubes, the liquefied minerals are sent into vats.
Date: September 8, 1903
Creator: Higgins, Pattillo
Partner: UNT Libraries Government Documents Department

Pumping Apparatus.

Description: Patent for pumping apparatus. This invention provides a means to elevate liquids by use of compressed air. It is specifically intended for deep oil-wells.
Date: August 25, 1903
Creator: Cain, Francis Charles & Herrenkind, Oscar Charles
Partner: UNT Libraries Government Documents Department

Sulfuric-Acid Process of Extracting Precious Metals From Solutions

Description: Patent for "new and useful Imporivements in Processes of Recovering Precious Metals from Their Solutions, and which I designate as the 'Sulfuric-Acid Process;' [...] to separate the precious metals from their cyanid solutions in a rapid and thorough matter and to recover the precious metals from solutions thereof." (lines 5-8 & 22-26)
Date: June 23, 1903
Creator: Bahn, Gustavus A.
Partner: UNT Libraries Government Documents Department

Utility Open Space

Description: A map of the utility open space in the Alamo area, specifically denoting soil classes, aquifer recharge zones, sewage treatment sites, solid waste disposal sites, and mining sites.
Date: September 1972
Creator: Alamo Area Council of Governments
Partner: UNT Libraries Government Documents Department

Groundwater Availability of the Trinity Aquifer, Hill Country Area, Texas: Numerical Simulations through 2050

Description: This report describes the construction and calibration of the numerical groundwater flow model and presents results of predictive simulations of water levels for the next 50 years based on projected demands from Regional Water Planning Groups.
Date: September 2000
Creator: Texas Water Development Board
Partner: UNT Libraries Government Documents Department

Please Pass the Salt: Using Oil Fields for the Disposal of Concentrate from Desalination Plants

Description: The purpose of this report is to show that oil and gas fields can physically and chemically accept concentrate from desalination plants, and to recommend changes to statute and rules that would allow the disposal of concentrate in oil and gas fields.
Date: April 2006
Creator: Texas Water Development Board
Partner: UNT Libraries Government Documents Department

Reservoir Site Protection Study

Description: This report summarizes the reservoir site protection study, authorized by the Texas Water Development Board to select reservoir sites most appropriate for protection and/or acquisition by the State of Texas in order to provide for future development of essential surface water supplies.
Date: July 2008
Creator: Texas Water Development Board
Partner: UNT Libraries Government Documents Department

Groundwater-Surface Water Interaction in the Brazos River Basin: Evidence from Lake Connection History and Chemical and Isotopic Compositions

Description: This report describes study methods used in determining the sources of the water in oxbow lakes along the Brazos River, characteristics of the Brazos River and oxbow lakes, and the hydrogeologic setting that hydraulically connects the aquifer, river, and lakes.
Date: October 2010
Creator: Texas Water Development Board
Partner: UNT Libraries Government Documents Department

Groundwater Resource Evaluation and Availability Model of the Gulf Coast Aquifer in the Lower Rio Grande Valley of Texas

Description: This report describes the construction and calibration of the numerical groundwater availability model for the Gulf Coast Aquifer in the Lower Rio Grande Valley and presents predictive groundwater results through 2050, using pumping projections provided by the regional water planning groups for the 2002 State Water Plan.
Date: June 2007
Creator: Texas Water Development Board
Partner: UNT Libraries Government Documents Department

Characterization of Playa Basins on the High Plains of Texas

Description: The purpose of this report is to determine how often playa basins held water from 1985 through 2000, and to identify playa basins that hold water most of the time, some of the time, and are dry most of the time in order to increase recharge to the Ogallala aquifer.
Date: August 2003
Creator: Texas Water Development Board
Partner: UNT Libraries Government Documents Department