Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "The irregularly shaped swimming pool and flagstone paving are beautiful but functional at Carole and Charles Blackwood's garden."

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Above, Carole Blackwood, left, studies her unusual "Harry Lauder's Walking Stick."

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "A water lily pond, in the foreground, helps create the natural effect of Charles and Carole Blackwood's garden."

Americium-241 is widely used as a radiation source, but it also has some potential risk if taken into the body. Although the radiotoxicity of americium-241 is small compared to other transuranic actinides, its effects on the reproductive system and on development of the placenta are more damaging than the effects of plutonium-239. A previous report based on a worst-case scenario involving a hypothetical fire accident in a contaminated facility indicated that there could have been a significant impact on nearby residents from a unit release of americium-241 via atmospheric dispersion. However, because the facility is located in a rural region where most drinking water supplies are drawn from private wells, it is believed that deposition of americium-241 from the atmosphere might also have impacts via the groundwater pathway by infiltration of rainwater. In this analysis, a three-dimensional analytical mathematical model is used to assess several aspects of americium-241 contamination of groundwater, including radioactive transformation, advection, dispersion, and soil sorption. Simulation results indicate that no significant radiological impacts would occur to the nearby residents via the groundwater pathway. 15 refs., 2 figs., 2 tabs.

The US program in high energy physics from 1985 to 1995 is reviewed. The program depends primarily upon work at the national accelerator centers, but includes a modest but diversified nonaccelerator program. Involvement of universities is described. International cooperation in high energy physics is discussed, including the European, Japanese, USSR, and the People's Republic of China's programs. Finally, new facilities needed by the US high energy physics program are discussed, with particular emphasis given to a Superconducting Super Collider for achieving ever higher energies in the 20 TeV range. (LEW)

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Tony Roma's does a brisk dinner-time business."

B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.

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

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story by reporter Jack Helsel about a German Shepard dog named Jaws whose owner hopes to make him a movie star. The story aired at 6:00 P.M.

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.

B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.

B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Laverne Henley, right, shows a quilt to Gertrude "Bea" Shear."

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Mrs. E. Stanley Berger, right, seems confused by the antique Brazillian chatelaine she holds."

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Ladies Music Club members Louise Rodesney, left, and Charlotte Rutledge, right, greet guest performers Becky and Stanford Turner."

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Don "Spud" Petty races downfield for John Marshall during a recent ninth grade football game."

Photograph used for a story in the Daily Oklahoman newspaper.

Caption: "Andrew Snavely, first grade; Penny Snavely, a home room mother; Lauren Helm and Cindy Burk, third-graders, from left, check out some of the gift items. (Carnival time at Quail Creek Elem.)"

Caption: "Sally Alexander, in the clown suit, assists first-graders Noah Adams and Kiley Burk at Oscar's grab bag stand. (Quail Creek Elem. carnival)"