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3,260 Matching Results
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Coaster-Brake.
Patent for a coaster brake featuring an improved positive drive and braking.
Date:
July 1, 1913
Creator:
Winfrey, Edgar M.
Object Type:
Patent
System:
The Portal to Texas History
Corrective Action Plan for CAU No. 404: Roller Coaster Sewage Lagoons and North Disposal Trench, Tonopah Test Range
This Corrective Action Plan (CAP) provides the selected corrective action alternative and proposes the closure implementation methodology for the Roller Coaster Sewage Lagoons and North Disposal Trench Corrective Action Unit (CAU) No. 404. The site is located on the Tonopah Test Range. CAU 404 consists of two Corrective Action Sites (CAS): the Roller Coaster Lagoons (CAS No TA-03-001-TA-RC) and the North Disposal Trench (CAS No TA-21-001-TA-RC). A site map of the lagoons and trench is provided. The Roller Coaster Sewage Lagoons are comprised of two unlined lagoons that received liquid sanitary waste in 1963 from the Operation Roller Coaster Man Camp and debris from subsequent construction and range cleanup activities. The North Disposal Trench was excavated in approximately 1963 and received solid waste and debris from the man camp and subsequent construction and range cleanup activities. A small hydrocarbon spill occurred during the 1995 Voluntary Corrective Action (VCA) activities in an area associated with the North Disposal Trench CAS.
Date:
July 1, 1997
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Preliminary Assessment for CAU 485: Cactus Spring Ranch Pu and DU Site CAS No. TA-39-001-TAGR: Soil Contamination, Tonopah Test Range, Nevada
Corrective Action Unit 485, Corrective Action Site TA-39-001-TAGR, the Cactus Spring Ranch Soil Contamination Area, is located approximately six miles southwest of the Area 3 Compound at the eastern mouth of Sleeping Column Canyon in the Cactus Range on the Tonopah Test Range. This site was used in conjunction with animal studies involving the biological effects of radionuclides (specifically plutonium) associated with Operation Roofer Coaster. The location had been used as a ranch by private citizens prior to government control of the area. According to historical records, Operation Roofer Coaster activities involved assessing the inhalation uptake of plutonium in animals from the nonnuclear detonation of nuclear weapons. Operation Roofer Coaster consisted of four nonnuclear destruction tests of a nuclear device. The four tests all took place during May and June 1963 and consisted of Double Tracks and Clean Slate 1, 11, and 111. Eighty-four dogs, 84 burros, and 136 sheep were used for the Double Tracks test, and ten sheep and ten dogs were used for Clean Slate 11. These animals were housed at Cactus Spring Ranch. Before detonation, all animals were placed in cages and transported to the field. After the shot, they were taken to the decontamination area …
Date:
July 1, 1998
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
[Photograph 2012.201.B0960.0334]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Oklahoma's only looping roller coaster is the Silver Bullet at Frontier City."
Date:
July 9, 1992
Creator:
Hellstern, Paul
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B1424.0257]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "The 1985 Mid-Amateur Golf Tournament at The Trails Golf Club was something of a roller-coaster ride for Tulsan Jim Young."
Date:
July 19, 1985
Creator:
McDaniel, David
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0246.0315]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Ohse had no problem flying his plane, but riding the roller coaster created some consternation, right, Angela Hamilton, 5, of Moore, left, and Brandy Evans, 6, of Midwest City."
Date:
July 4, 1982
Creator:
Beckel, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B1103.0734]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Coasting through summer evenings on top of the world, rides at amusement parks are a good way to catch a breath of air. A panoramic view of the city skyline is gianed from this silhouetted vantage point atop an Oklahoma City roller coaster."
Date:
July 3, 1979
Creator:
Miller, Joe
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B1001.0219]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "An apprehensive Mike Every, left, and sister Julie, both of Checotah, get ready to take the plunge Thursday on the Silver Bullet roller coaster at Frontier City amusement park in Oklahoma City."
Date:
July 9, 1992
Creator:
Hellstern, Paul
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Letter from John J. Herrera to Lassie Jackson - 1950-07-20]
Onionskin paper carbon copy of letter from John J. Herrera, LULAC First National Vice-President, to Mrs. Lassie Jackson of Rosenberg, Texas, dated July 20, 1950. This is a response to Jackson's letter which was published in the Rosenberg Herald and The Texas Coaster pertaining to her objections to the banning of the "Czech Hour" on the radio station. Apparently in her letter she referred to Latin Americans of her community as Communists. Herrera is answering on behalf of the Latin American citizenry of Fort Bend County.
Date:
July 20, 1950
Creator:
Herrera, John J.
Object Type:
Letter
System:
The Portal to Texas History
Source terms for plutonium aerosolization from nuclear weapon accidents
The source term literature was reviewed to estimate aerosolized and respirable release fractions for accidents involving plutonium in high-explosive (HE) detonation and in fuel fires. For HE detonation, all estimates are based on the total amount of Pu. For fuel fires, all estimates are based on the amount of Pu oxidized. I based my estimates for HE detonation primarily upon the results from the Roller Coaster experiment. For hydrocarbon fuel fire oxidation of plutonium, I based lower bound values on laboratory experiments which represent accident scenarios with very little turbulence and updraft of a fire. Expected values for aerosolization were obtained from the Vixen A field tests, which represent a realistic case for modest turbulence and updraft, and for respirable fractions from some laboratory experiments involving large samples of Pu. Upper bound estimates for credible accidents are based on experiments involving combustion of molten plutonium droplets. In May of 1991 the DOE Pilot Safety Study Program established a group of experts to estimate the fractions of plutonium which would be aerosolized and respirable for certain nuclear weapon accident scenarios.
Date:
July 1, 1995
Creator:
Stephens, D.R.
Object Type:
Report
System:
The UNT Digital Library
Tonopah Test Range Air Monitoring: CY2012 Meteorological, Radiological, and Airborne Particulate Observations
In 1963, the Atomic Energy Commission (AEC), predecessor to the US Department of Energy (DOE), implemented Operation Roller Coaster on the Tonopah Test Range (TTR) and an adjacent area of the Nevada Test and Training Range (NTTR) (formerly the Nellis Air Force Range (NAFR)). Operation Roller Coaster consisted of four tests in which chemical explosions were detonated in the presence of nuclear devices to assess the dispersal of radionuclides and evaluate the effectiveness of storage structures to contain the ejected radionuclides. These tests resulted in dispersal of plutonium over the ground surface downwind of the test ground zero. Three tests, Clean Slate 1, 2, and 3, were conducted on the TTR in Cactus Flat; the fourth, Double Tracks, was conducted in Stonewall Flat on the NTTR. DOE is working to clean up and close all four sites. Substantial cleaned up has been accomplished at Double Tracks and Clean Slate 1. Cleanup of Clean Slate 2 and 3 is on the DOE planning horizon for some time in the next several years. The Desert Research Institute installed two monitoring stations, number 400 at the Sandia National Laboratories Range Operations Center and number 401 at Clean Slate 3, in 2008 and a …
Date:
July 1, 2013
Creator:
Mizell, Steve A; Nikolich, George; Shadel, Craig; McCurdy, Greg & Miller, Julianne J
Object Type:
Report
System:
The UNT Digital Library
Preliminary Assessment for CAU 485: Cactus Spring Ranch Pu and Du Site, CAS No. TA-39-001-TAGR: Soil Contamination, Tonapah Test Range, Nevada
Corrective Action Unit 485, Corrective Action Site TA-39-001-TAGR, the Cactus Spring Ranch Soil Contamination Area, is located approximately six miles southwest of the Area 3 Compound at the eastern mouth of Sleeping Column Canyon in the Cactus Range on the Tonopah Test Range. This site was used in conjunction with animal studies involving the biological effects of radionuclides (specifically plutonium) associated with Operation Roller Coaster. According to field records, a hardened layer of livestock feces ranging from 2.54 centimeters (cm) (1 inch [in.]) to 10.2 cm (4 in.) thick is present in each of the main sheds. IT personnel conducted a field visit on December 3, 1997, and noted that the only visible feces were located within the east shed, the previously fenced area near the east shed, and a small area southwest of the west shed. Other historical records indicate that other areas may still be covered with animal feces, but heavy vegetation now covers it. It is possible that radionuclides are present in this layer, given the history of operations in this area. Chemicals of concern may include plutonium and depleted uranium. Surface soil sampling was conducted on February 18, 1998. An evaluation of historical documentation indicated that …
Date:
July 1, 1998
Creator:
ITCorporation
Object Type:
Report
System:
The UNT Digital Library
Active Commuter Rail Agency Service Contracts
Correspondence issued by the Government Accountability Office with an abstract that begins "Commuter rail is an important part of the transportation system in many cities and regions in our country, providing more than 420 million passenger trips in 2005. Although several of the largest commuter rail agencies hire their own employees, many agencies contract with other companies, including Amtrak, freight railroads, and private rail operators, to provide services that are critical to running the agencies' trains. These contracted services include providing crews to operate trains (train operations); maintenance of equipment (MOE), including maintenance of train cars and locomotives; dispatching train traffic; and maintenance of way (MOW), which involves maintaining the track, signals, and other track infrastructure. Commuter rail agencies can obtain these services by opening contracts to competition or through noncompetitive negotiations with a service provider. Congress asked us to provide information on the service arrangements between commuter rail agencies and other companies. Accordingly, we addressed the following questions: (1) How many currently active commuter rail service contracts were obtained through competitive and noncompetitive processes? (2) What differences, if any, are there between competitively and noncompetitively negotiated contracts?"
Date:
July 10, 2006
Creator:
United States. Government Accountability Office.
Object Type:
Text
System:
The UNT Digital Library
Use of field experimental studies to evaluate emergency response models
The three-dimensional diagnostic wind field model (MATHEW) and the particle-in-cell atmospheric transport and diffusion model (ADPIC) are used by the Atmospheric Release Advisory Capability to estimate the environmental consequences of accidental releases of radioactivity into the atmosphere. These models have undergone extensive evaluations against field experiments conducted in a variety of environmental settings ranging from relatively flat to very complex terrain areas. Simulations of tracer experiments conducted in a complex mountain valley setting revealed that 35 to 50% of the comparisons between calculated and measured tracer concentrations were within a factor of 5. This may be compared with a factor of 2 for 50% of the comparisons for relatively flat terrain. This degradation of results in complex terrain is due to a variety of factors such as the limited representativeness of measurements in complex terrain, the limited spatial resolution afforded by the models, and the turbulence parameterization based on sigma/sub theta/ measurements to evaluate the eddy diffusivities. Measurements of sigma/sub theta/ in complex terrain exceed those measured over flat terrain by a factor of 2 to 3 leading to eddy diffusivities that are unrealistically high. The results of model evaluations are very sensitive to the quality and the representativeness of …
Date:
July 16, 1985
Creator:
Gudiksen, P. H.; Lange, R.; Rodriguez, D. J. & Nasstrom, J. S.
Object Type:
Article
System:
The UNT Digital Library
Polk County Enterprise (Livingston, Tex.), Vol. 127, No. 54, Ed. 1 Sunday, July 5, 2009
Semi-weekly newspaper from Livingston, Texas that includes local, state and national news along with advertising.
Date:
July 5, 2009
Creator:
Reddell, Valerie
Object Type:
Newspaper
System:
The Portal to Texas History
The Sachse Sentinel (Sachse, Tex.), Vol. 9, No. 7, Ed. 1 Sunday, July 1, 1984
Monthly newspaper from Sachse, Texas that includes local, state and national news along with advertising.
Date:
July 1, 1984
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Brownwood Bulletin (Brownwood, Tex.), Vol. 113, No. 240, Ed. 1 Tuesday, July 23, 2013
Weekly newspaper from Brownwood, Texas that includes local, state and national news along with advertising.
Date:
July 23, 2013
Creator:
Stuckly, Derrick
Object Type:
Newspaper
System:
The Portal to Texas History
Altus Times (Altus, Okla.), Vol. 99, No. 116, Ed. 1 Monday, July 27, 1998
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
July 27, 1998
Creator:
Cole, Carol
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Hallettsville New Era. (Hallettsville, Tex.), Vol. 17, No. 12, Ed. 1 Friday, July 28, 1905
Weekly newspaper from Hallettsville, Texas that includes local, state, and national news along with advertising.
Date:
July 28, 1905
Creator:
Meitzen, E. R.
Object Type:
Newspaper
System:
The Portal to Texas History
The Winkler County News (Kermit, Tex.), Vol. 42, No. 83, Ed. 1 Thursday, July 6, 1978
Semi-weekly newspaper from Kermit, Texas that includes local, state, and national news along with advertising.
Date:
July 6, 1978
Creator:
Brewer, Bert
Object Type:
Newspaper
System:
The Portal to Texas History
Sweetwater Reporter (Sweetwater, Tex.), Vol. 113, No. 203, Ed. 1 Monday, July 11, 2011
Daily newspaper from Sweetwater, Texas that includes local, state, and national news along with advertising.
Date:
July 11, 2011
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Daily Tribune (Mount Pleasant, Tex.), Vol. 141, No. 120, Ed. 1 Sunday, July 19, 2015
Daily newspaper from Mount Pleasant, Texas that includes local, state, and national news along with advertising.
Date:
July 19, 2015
Creator:
Davis, Marcia & Borders, Gary
Object Type:
Newspaper
System:
The Portal to Texas History
Pawhuska Daily Journal-Capital (Pawhuska, Okla.), Vol. 68, No. 149, Ed. 1 Thursday, July 28, 1977
Daily newspaper from Pawhuska, Oklahoma that includes local, state, and national news along with advertising.
Date:
July 28, 1977
Creator:
Spencer, Frank
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Perry Daily Journal (Perry, Okla.), Vol. 91, No. 129, Ed. 1 Monday, July 9, 1984
Daily newspaper from Perry, Oklahoma that includes local, state, and national news along with advertising.
Date:
July 9, 1984
Creator:
Watson, Milo W.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History