Photograph of David Lewis posing with two individuals at Great Lakes Carbon company. The subjects are identified as Greta (left), David Lewis (center), and Mrs. Wilson (right). They pose inside of a lab with cinder block walls.

The availability of the Bevalac facility of energetic heavy ions with range greater than the size of small mammals makes possible the determination of the biological effects of relatively well defined high LET, whole body irradiation. With the increasing application of high-energy heavy ions in radiobiology there is a corresponding need to develop reliable techniques of both relative and absolute absorbed dose measurement. This paper describes dosimetry studies by the Health Physics Department of the Lawrence Berkeley Laboratory with activation detectors, ionization chambers, nuclear emulsion, thermoluminescent dosimeters and X-ray film. The application of these techniques to an experiment designed to study the leukemogenic effect of the whole-body irradiation of mice by 250 MeV/amu carbon ions is briefly described. Values of absorbed dose in tissue, obtained during this experiment, with a nitrogen filled ionization chamber and $sup 7$LiF thermoluminescent dosimeters are compared and shown to be in good agreement. As a result of this work a value for the average energy to produce an ion pair (W) in nitrogen by 250 MeV/amu $sup 6+$C ions of 37 +- eV was determined. Values of the efficiency of $sup 7$LiF relative to $sup 60$Co $gamma$-rays for ions with dE/dx in the range 110-260 …

Photograph of the Forest Park Lanes from across the street. The sky covers the background.

Photograph of the Forest Park Lanes from across the street. The sky covers the background.

Photograph of the Forest Park Lanes from across the street. The sky covers the background.

Photograph of the parking lot at Forest Park Lanes. There is a tree visible to the left.

Photograph of the parking lot at Forest Park Lanes. There is a tree visible to the left.

Photograph of the parking lot at Forest Park Lanes. The surrounding areas appear empty. The sky covers the background.

Photograph of a close-up view of the Forest Park Lanes. Tree branches are visible in the image.

Photograph of an open area at Forest Park Lanes. The surrounding areas appear empty except for two cars visible in the image. The sky covers the background.

Photograph of Frank Healer on set with Ron Spain, Willie Monroe, and Ron Godbey. In the foreground, Healer is sitting on a chair with his hands in his lap. He is smiling and looking into the camera. His hair is parted to the side. In the background, Spain, Monroe, and Godbey can be seen seated behind a desk. They appear to be in a conversation. Everyone is dressed in suits and ties.

Photograph of Geraldine Watson preparing a plant for mounting in the Lamar University Herbarium. She looks down at a table with scissors and a brush, holding the stem of a plant. She stands in a room with several workspaces and a dark-colored cabinet in the background.

One preserved mussel specimen including both the left and right valves. The specimen exhibits an elliptical shape; moderately thick shell; white internal coloring; tan external coloring; no external sculpturing. Collected in the Sulphur basin. The specimen measures between 100 - 120 mm in length and was assessed to be relatively-recently dead when collected.

One preserved mussel specimen including both the left and right valves. The specimen exhibits an elliptical shape; moderately thick shell; white internal coloring; tan external coloring; no external sculpturing. Collected in the Sulphur basin. The specimen measures between 100 - 120 mm in length and was assessed to be long dead when collected.

One preserved mussel specimen including both the left and right valves. The specimen exhibits an elliptical shape; moderately thick shell; white internal coloring; brown external coloring; no external sculpturing. Collected in the Sulphur basin. The specimen measures between 100 - 120 mm in length and was assessed to be long dead when collected.

One preserved mussel specimen including both the left and right valves. The specimen exhibits a rhomboidal shape; thin shell; double looped beak sculpturing; bluish-white internal coloring; reddish-brown external coloring; no external sculpturing. Collected in the Sulphur basin. The specimen measures between 100 - 120 mm in length and was assessed to be live when collected.

Photograph of an unknown man on set with Ron Spain, Willie Monroe, and Frank Healer. In the foreground, the man is sitting on a chair with his hands in his lap. He is smiling and looking into the camera. His hair is parted on the side. He is dressed casually. In the background, Spain, Monroe, and Healer can be seen seated behind a desk. They are dressed in formal attire.

Photograph of Mary Ruth Carleton on set. In the foreground, Carleton is sitting on a chair with her hands in her lap. She is looking into the camera and her mouth is slightly open. In the background, Lee Elsesser and Ron Godbey can be seen seated behind a table. They appear to be in a conversation. Everyone is dressed formally.

One preserved mussel specimen including both the left and right valves. The specimen exhibits a round shape; thick shell; bluish-white internal coloring; brown external coloring; external sculpturing in the form of pustules. Collected in the Sulphur basin. The specimen measures between 60 - 100 mm in length and was assessed to be very-recently dead when collected.

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

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

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

Photograph of Mary Ruth Carleton on set. In the foreground, Carleton is sitting on a chair with her hands in her lap. She is smiling and looking into the camera. In the background, Lee Elsesser and Ron Godbey can be seen seated behind a table. They appear to be in a conversation. Everyone is dressed formally.

Photograph of the Texas College of Osteopathic Medicine from across the street. The sky covers the entire background.