Photograph used for a story in the Daily Oklahoman newspaper. Caption: "A Cleopatra canna plant at the Horn Canna Farm blooms even on a hot summer day."

Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "Red King Humbert"

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Louise Horn checks a Red King Humbert flower in the field of the family's canna farm near Carnegie."

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "As central Oklahoma's population grows older, more money will be needed to provide services to the elderly, said Tom Brown, United Way of Metro Oklahoma City chief executive officer."

Photograph used for a story in the Daily Oklahoman newspaper.

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Patricia Ben Peterson and Richard Muenz portray the romantic leads Sarah Brown and Sky Masterson in the national touring production of Frank Loesser's "Guys and Dolls."

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "eagle scout"

Photograph used for a story in the Daily Oklahoman newspaper.

Video footage from the WBAP-TV television station in Fort Worth, Texas, covering a news story.

Video footage from the WBAP-TV television station in Fort Worth, Texas, covering a news story.

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

This home movie excerpt documents baby James Curtis Goree at 7-weeks old observing himself in a mirror.

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

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Putnam City High School's first graduate Etta Green Schneider, 90, who graduated with three classmates in 1919, stands with former Putnam City Superintendent Leo Mayfield as she is honored during the school district's faculty and staff opening assembly to welcome in the new school year."

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Chalk artist Robert Marsee Jr. works on a sample sidewalk drawing outside Oklahoma City Community College."

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Early Plyler studies his Paris Star caneliation stamp collection (1852-1876) in his Edmond home."

Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "Lisa Richardson looks at a statue which marks the area set aside for police dogs."

Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "Edmond H. S. football player Hod Steele."

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Donna Rushing of Metro Tech."

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Hodrick Steele, Edmond football"

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "backed by an array of colorful parachute shrouds, Stroud Safety employee Albert Lee stitches together one of the car-stopping parachutes at the Oklahoma City company's headquarters at SW 27 and Agnew."

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Stroud, Bob - Oklahoma City - Owner Stroud Safety"

A common problem in shield design is determining the neutron flux that streams through ducts in shields and also that penetrates the shield after having traveled partway down the duct. Obviously the determination of the neutrons that stream down the duct can be computed in a straightforward manner using Monte Carlo techniques. On the other hand those neutrons that must penetrate a significant portion of the shield are more easily handled using discrete ordinates methods. A hybrid discrete ordinates/Monte Carlo cods, TWODANT/MC, which is an extension of the existing discrete ordinates code TWODANT, has been developed at Los Alamos to allow the efficient, accurate treatment of both streaming and deep penetration problems in a single calculation. In this paper we provide examples of the application of TWODANT/MC to typical geometries that are encountered in shield design and compare the results with those obtained using the Los Alamos Monte Carlo code MCNP{sup 3}.

The Bechtel National, Inc. Detailed Design Instructions for Structural Design (DDI-02) requires that concrete components of the GWSB not exceed 150{degrees}F for structural elements and 200{degrees}F locally over a 24 hour period. In addition, the Waste Acceptance Product Specifications (WAPS) sets the maximum post cooldown temperature of the glass waste-form at 400{degrees}C. Various scenarios can be postulated which result in elevated glass and concrete temperatures in the GWSB. Therefore, it is important to determine the concrete and glass temperatures during both normal and off-normal conditions. This document details specific tasks required to develop a technically defensible and verifiable methodology for determining maximum temperatures for the waste-forms and the GWSB concrete structures. All models used in this analysis will satisfy Quality Assurance requirements and be defensible to review and oversight committees.