Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Sisters Kathy Spencer, left, and Deanna Gailas meet for the first time recently in Oklahoma City."

Photograph used for a newspaper owned by the Oklahoma Publishing Company.

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "The not-so-secret weapons at Pauls Valley: halbacks Stephen Ford, above, and Travis Thompson."

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Amateur boxer Ollie Tiger is one of about 20 young men working out at the new Golden Gloves Old-Timers Association boxing facility at Shilling Park Recreation Center."

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "The oral history in cludes the recollections of four Oklahoma homemakers, who were interviewed by Norman resident Hester Sickles. Helen Sickles From Norman."

All of the controls on high-efficiency particulate air (HEPA) filters are based on rigid manufacturing standards with regard to filtration efficiency, temperature performance, pressure integrity, and strength. Third-party inspection and testing by the US Department of Energy increases the reliability of new HEPA filters, but only routine in-place testing is used to assure that an aging filter performs adequately. In 1980 the Lawrence Livermore National Laboratory initiated a small evaluation to determine if age has a significant effect on the structural integrity of HEPA filters. A series of used uncontaminated filters dating back to 1965 was obtained for these tests. Tensile strength tests on the old media indicated a decrease in strength. To provide additional measurement of the filters' overall strength, several of these aged filters were subjected to pressure pulses equivalent to the NRC Region I tornado pulses and shock wave overpressures. Data from these tests indicate a decrease in breaking pressure of from 25/endash/50%. A large increase in complete filter pack blow-out during the simulated NRC Region I tornado tests was also observed. The preliminary results indicate the need for an administrative lifetime for HEPA filters used in critical nuclear facilities. Due to the unique conditions in each …

Weekly newspaper from Sachse, Texas that includes local news and advertising.

Weekly newspaper from Palacios, Texas that includes local, state, and national news along with advertising.

Daily newspaper from Gainesville, Texas that includes local, state, and national news along with advertising.

Weekly newspaper from Wylie, Texas that includes local, state, and national news along with advertising.

Weekly newspaper from Dublin, Texas that includes local, state, and national news along with advertising.

Weekly newspaper from San Diego, Texas that includes local, state, and national news along with advertising.

Photograph of a man with a video camera recording the model of a building which is placed on a table. A small TV and other office equipment are seen around the office.

Weekly newspaper from Mannford, Oklahoma that includes local, state, and national news along with advertising.

Weekly newsletter discussing natural resources, parks, hunting and fishing, and other information related to the outdoors in Texas.

Daily newspaper from Sapulpa, Oklahoma that includes local, state, and national news along with advertising.

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Curtis W. Van Horn former superintendent of the Crooked Oak school district, will challenge incumbet Bob Clark for the job of Oklahoma County superintendent of schools."

Photograph used for a newspaper owned by the Oklahoma Publishing Company.

Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "George McKenna is a nationally known principal who turned a violence-wracked Los Angeles high school into a model one where the great majority of students now not only come to class, but go on to college as well."

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Linebacker Marty Irland is back at Central State after seven operations to repair his bicep."

Photograph used for a newspaper owned by the Oklahoma Publishing Company.

Semiweekly newspaper from Seminole, Texas that includes local, state, and national news along with extensive advertising.

Weekly newspaper from Houston, Texas that includes local, state, and national news along with advertising.

Daily newspaper from Port Lavaca, Texas that includes local, state, and national news along with advertising.