Development of a steam separator the Pathfinder Reactor is reported. A full-scale separator model was developed through the combination of scale-model testing and the application of principles associated with the existing theory of centrifugal separation. This model was put through full-scale air-water tests which led to modifications and a final design which meets Pathfinder requirements. Design data are included for the reactor and the steam separator. (J.R.D.)

The water-moderated core used for destructive experiments is mounted in the Spent I open-type reactor vessel, which has no provision for pressurization or forced coolant flow. The core is an array of highly enriched aluminum clad, plate-type fuel assemblies, using four bladetype, gang-operated control rods. Reactor transients are initiated at ambient temperature by step-insentions of reactivity, using a control rod which can be quickly ejected from the core. Following an initial series of static measurements to determine the basic- reactor properties of the test core, a series of nondestructive, self-limiting power excursion tests was performed, which covered a reactor period range down to the point where minor fuel plate damage first occurred -approximately for a 10- msec period test. These tests provided power, temperature, and pressure data. Additional kinetic teste in the period region between 10 and 5 msec were completed to explore the region of limited core damage. Fuel plate damage results included plate distortion, cladding cracking, and fuel melting. These exploratory tests were valuable in revealing unexpected changes in the dependence of pressure, temperature, burst energy, and burst shape parameters on reactor period, although the dependence of peak power on reactor period was not significantly changed. An evaluation …

A study was made to determine whether secondary iso tope effects also occur in molecular structure. Electron diffraction studies were carried out on ethane and deuteroethane. In C/sub 2/H/sub 6/ the mean C-C and C-H bond lengths found agreed very closely with values determined for other paraffin hydrocarbons, and the C--H bond showed a normal primary isotope effect (~ 0.005 A) similar to that found in methane when H is replaced by O. The output of the leastsquares analysis suggested that the mean C-- C bond length in C/sub 2/D/sub 6/ is shorter than in C/sub 2/H/sub 6/ and by about 0.004 A. Th e decrease seemed to be real for the apparent uncertainty was not much greater than 0.001 A. (M.C.G.)

Photograph used for a story in the Oklahoma Times newspaper. Caption: "New director L. E. "Hooter" Brewer smoothes sign in place as things get rolling at Del City Chamber of Commerce office."

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Giant Keystone dam begins to take shape in Keystone reservoir area in the northwestern corner of Tulsa County near Sand Springs."

Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "A ribbon-cutting ceremony Friday officially opened to traffic the Broadway Extension between Britton Road and the North Bypass."

Photograph used for a story in the Oklahoma Times newspaper. Caption: "Hitting the Jackpot the hard way, a deputy sheriff swings an axe into an illegal slot machine, confiscated in May from the American Legion club in Midwest Club."

Photograph used for a story in the Oklahoma Times newspaper.

Photograph used for a story in the Oklahoma Times newspaper. Caption: "Several hundred dollars worth of gambling equipment was smashed to bits Friday by deputy sheriffs Frank Lynch and Larkin Lamb (with hat)."

Photograph used for a story in the Oklahoma Times newspaper. Caption: "An Oklahoma City man who comes from a long line of lawyers is a new assistant dean of the University of Oklahoma school of law."

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Dr. Paul W. Goaz... Microscopes for Indians."

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Kay Spaulding and Tom Stanfill...Pooling their fun."

Photograph taken for a newspaper owned by the Oklahoma Publishing Company. Caption: "Mrs. Albert (Barbara Ann) Pike, 25, Wichita, Kan., driver of the car at left, and two of her four children, Dale 6, and Joyce, six months, were critically injured then the car and a truck semi-trailer truck driven by Archie Vern Wilson, 39, Okmulgee, collided on U.S. 77 two miles north of Ponca City Wednesday."

Photograph taken for a story in the Daily Oklahoman newspaper. Caption: "Emogene Gunter Collins, a voice pupil of Inez L. Silberg at the University of Oklahoma, will sing her senior recital at 8 p.m. Sunday in OCU Auditorium."

Photograph taken for a newspaper owned by the Oklahoma Publishing Company. Caption: "Here are Mr. and Mrs. Don Epperson and their children Diane and Mike at the Tower of London on their recent visit to England."

Photograph taken for a story in the Daily Oklahoman newspaper. Caption: "for dial telephone system was built at Cleveland at a cost of $300.000."

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

Photograph used for a story in the Oklahoma Times newspaper. Caption: "As work at the new Midwest City Hospital goes into final stages, architect Earl Bishop checks specifications."

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Claude Hudson and pointer, Dan, get ready for a hunting trip on his "goat legs" motor scooter."

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

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

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

Photograph used for a story in the Oklahoma Times newspaper. Caption: "Going up near NW 23 and Meridian is another 64-unit apartment project with more to come upon completion of these."

Photograph used for a story in the Oklahoma Times newspaper. Caption: "Ninety more units are going up at the Country Club Apartments."