Search for Elements 94 and 93 in Nature. Presence of 94$sup 239$ in Pitchblende (open access)

Search for Elements 94 and 93 in Nature. Presence of 94$sup 239$ in Pitchblende

None
Date: April 13, 1942
Creator: Seaborg, G. T. & Perlman, M. L.
Object Type: Report
System: The UNT Digital Library
Production of (Uranium) Tetrafluoride (open access)

Production of (Uranium) Tetrafluoride

Production of tetrafluoride for the month of April was 49,400. New equipment installed late in March operated smoothly and the production was slightly over the rated capacity of the plant. Nickel ends were welded on to the steel reactor tubes to prevent corrosion at the cover joint and possible contamination of the product with iron. The nickel ends will also save considerable repair work on the tube ends. The magnesium trays for some of the reactors are beginning to crack at the sides from frequent straightening. The trays are bent out of shape by the expansion of the product and are reshaped by hammering over a die. Some of the cracks have been repaired by welding but this is not very satisfactory because the welded trays are harder to straighten and often crack again.
Date: May 13, 1943
Creator: Long, K. E. & Swinehart, C. F.
Object Type: Report
System: The UNT Digital Library
Operating standards: Study of start up, physics measurements (open access)

Operating standards: Study of start up, physics measurements

As a starting point for planning the physics measurements to be made during the start up of the pile, this memorandum describes a procedure for each of three cases, a large poisoned pile, running at power with a small unpoisoned pile but marking physics measurements with the large pile before going to power, and a similar case except that the physics measurements on the large pile are done after running with power on the small pile This memorandum should by no means be taken as a final proposal. It has resulted in uncovering shortcomings in instrumentation which have been covered in other memoranda. Estimates of the time required for the physics measurements are given. These will furnish you with a basis for discussion with the Operating Supervision to estimate the total time required for each step.
Date: April 13, 1944
Creator: Marshall, J.
Object Type: Report
System: The UNT Digital Library
Deaeration of process water in the F Area (open access)

Deaeration of process water in the F Area

This memorandum discusses the deaeration of process water for the F area at the Hanford Engineer Works. The memorandum is dated July 13, 1944.
Date: July 13, 1944
Creator: Dunnington, W.
Object Type: Report
System: The UNT Digital Library
ISOTHERMAL CORROSION TESTING OF ALUMINUM SLUG JACKETS (open access)

ISOTHERMAL CORROSION TESTING OF ALUMINUM SLUG JACKETS

None
Date: December 13, 1944
Creator: Larson, R E & Olson, R C
Object Type: Report
System: The UNT Digital Library
METALLURGY DIVISION REPORT FOR MONTH OFFEBRUARY 1945 (open access)

METALLURGY DIVISION REPORT FOR MONTH OFFEBRUARY 1945

None
Date: March 13, 1945
Creator: unknown
Object Type: Report
System: The UNT Digital Library
HIGH VOLTAGE RECTIFICATION (open access)

HIGH VOLTAGE RECTIFICATION

None
Date: April 13, 1945
Creator: Nelson, W.H.
Object Type: Report
System: The UNT Digital Library
Minutes of meeting on Columbia River studies (open access)

Minutes of meeting on Columbia River studies

This document contains minutes of a meeting on Columbia River studies that took place on July, 13, 1945. Topics discussed include: dispersal of thermal effluent, viability of current sampling techniques, survey records of chemical and bacteriological analysis, the results of the fish study, analytical procedures to determine the addition of small amounts of addition agents, radioactivity studies, and determination of new sampling points.
Date: July 13, 1945
Creator: Kidder, C. P.
Object Type: Report
System: The UNT Digital Library
Protective measures for personnel (open access)

Protective measures for personnel

This document addresses radiation protection concerns for workers in the experimental laboratories and production plants where nuclear fission piles are being used. A broad in-depth discussion is provided based with the experiences gained in the Manhattan Project and being applied to contemporary activities. Discussion is thorough and encompasses control of external irradiations including alpha, beta, gamma, and neutron radiations; and control of radioactivity within the body by control of inhalation, ingestion, and entrance through skin or wounds. General measures for the control of radiation hazards is addressed by provision of clothing and waste disposal. An Appendix 1 is entitled General Rules and Procedures Concerning Activity Hazards.
Date: December 13, 1946
Creator: Nickson, J.J.
Object Type: Report
System: The UNT Digital Library
100 Areas technical activities report: Physics, February 1947 (open access)

100 Areas technical activities report: Physics, February 1947

This document details 100 Areas technical activities in reactor physics research and operation for the month of February 1947.
Date: March 13, 1947
Creator: Gast, P. F.
Object Type: Report
System: The UNT Digital Library
Distribution of Boron in Processing of Carnotite Concentrate (open access)

Distribution of Boron in Processing of Carnotite Concentrate

It was desired to determine the distribution of boron in the various steps of the processing of domestic ore concentrates containing high percentages of boron. The experiments described in this report were directed toward that end. Summary of this report are: (1) a black oxide containing 0.6 ppm of boron was prepared from material containing 350 ppm; (2) less than 0.02% of the boron in the original material appeared in the black oxide; (3) the iron step did not remove appreciable amounts of boron; (4) the bulk of the extracted boron was removed in the soda salt precipitation; and (5) some of the boron was removed in the acid leach and calcination steps.
Date: March 13, 1947
Creator: O'Connors, R. J.
Object Type: Report
System: The UNT Digital Library
Graphite expansion committee meeting of June 6, 1947 (open access)

Graphite expansion committee meeting of June 6, 1947

The gas thermometer in the F Pile has been overhauled and re-calibrated. The readings are still in agreement with the readings from the graphite thermocouples. A similar overhaul of the gas thermometer in the D Pile will be made during June. The progress of further outward bowing of Tube 2496-D can not be followed satisfactorily even though readings are obtained from both inlet and outlet ends of the tube. Preliminary results obtained from the one-tube mock-up suggest the possibility that the graphite adjacent to the gun barrels in the upper part of the D Pile may fracture after an additional expansion of about 50%, and that this fracturing may distort the tube locally so that 1.44-inch diameter pieces can not be passed through the tube. There is definite indication that continued expansion of the graphite in the D Pile is causing an increase in both the frequency and severity of gun-barrel binding. The committee endorses the proposal that tubes in the top corners of the F Pile which have yet to be discharged for the first time should be left empty rather than re-loaded. This move would be in the direction of reducing the size of the pile in anticipation …
Date: June 13, 1947
Creator: Woods, W. K.
Object Type: Report
System: The UNT Digital Library
Investigation of contamination bearing algae in the Columbia River (open access)

Investigation of contamination bearing algae in the Columbia River

Recent discussions in the group have given rise to the problem of determining whether the beta contamination found in the Columbia River is carried by the algae which are found in the retention basin. The algae accumulate in the basin and apparently remain there longer than the retained water, and thus may be contaminated to a greater extent than the water itself.
Date: October 13, 1947
Creator: Paas, H. J.
Object Type: Report
System: The UNT Digital Library
Minutes of Meeting Held May 12 and13, 1948 Between Representatives of NEPA and Project Lexington and AEC. (open access)

Minutes of Meeting Held May 12 and13, 1948 Between Representatives of NEPA and Project Lexington and AEC.

None
Date: May 13, 1948
Creator: Stever, H. G.
Object Type: Report
System: The UNT Digital Library
234-5 Project ventilation specifications (open access)

234-5 Project ventilation specifications

This brief memo from the 300 area of the Hanford plant, July 13, 1948, describes the need to redesign the ventilation system so as to minimize hazards associated with performing maintenance work.
Date: July 13, 1948
Creator: Work, J.B.
Object Type: Report
System: The UNT Digital Library
An Isotope Effect in a Simple Chemical Reaction (open access)

An Isotope Effect in a Simple Chemical Reaction

It has been found that the carbon dioxide obtained from the decarboxylation of singly-carboxyl labeled malonic acid is impoverished in the C{sup 14} label and that the acetic acid formed is correspondingly enriched.
Date: July 13, 1948
Creator: Yankwich, Peter E. & Calvin, Melvin
Object Type: Report
System: The UNT Digital Library
Summary of radioactive contamination surveys in the 3000 Area drinking water system (open access)

Summary of radioactive contamination surveys in the 3000 Area drinking water system

None
Date: September 13, 1948
Creator: Singlevich, W.
Object Type: Report
System: The UNT Digital Library
SLUG RUPTURES IN THE OAK RIDGE NATIONAL LABORATORY PILE (open access)

SLUG RUPTURES IN THE OAK RIDGE NATIONAL LABORATORY PILE

None
Date: October 13, 1948
Creator: Cagle, C.D. & Emlet, L.B.
Object Type: Report
System: The UNT Digital Library
Health problems associated with investigation of off-plant uranium rolling. Rough draft (open access)

Health problems associated with investigation of off-plant uranium rolling. Rough draft

The following is a report of a trip to the Simonds Saw & Steel Company, Lockport, New York, on May 3, 1949. The purpose of the visit was to observe the various operations involved in the rolling of uranium rods at this plant and health problems associated with the rolling operations.
Date: May 13, 1949
Creator: Adley, F. E.
Object Type: Report
System: The UNT Digital Library
[Office of Hanford Directed Operations events of importance for week ending May 11, 1949] (open access)

[Office of Hanford Directed Operations events of importance for week ending May 11, 1949]

This report details events of importance reported by the Hanford Operations Office for the week ending May 11, 1949.
Date: May 13, 1949
Creator: Schlemmer, F. C.
Object Type: Report
System: The UNT Digital Library
The path of carbon in photosynthesis. V. Paper chromatography and radioautography of the products (open access)

The path of carbon in photosynthesis. V. Paper chromatography and radioautography of the products

None
Date: June 13, 1949
Creator: Benson, A. A.; Bassham, J. A.; Calvin, M.; Goodale, T. C.; Haas, V. A. & Stepka, W.
Object Type: Report
System: The UNT Digital Library
Review of DR water plant design for possible expansion (open access)

Review of DR water plant design for possible expansion

A study of the design of the DR Water Plant made for the purpose of estimating the feasibility of effecting an expansion of capacity has shown the following: (1) The Charles T. Main Company design has incorporated spare spaces and other provisions to permit a relatively simple increase in capacity to 42,000 GPM without undue additional design or procurement being required. (2) An increase in capacity to 44,000 GPM would require considerable re-design of the 183-DR, 190-DR and interconnecting pipe lines and would incur costs which may be out of proportion to the small increase in flow attained. In view of the urgency for the completion of the design and construction of this Water Plant, further consideration of an expansion to 44,000 GPM is not recommended.
Date: February 13, 1950
Creator: unknown
Object Type: Report
System: The UNT Digital Library
THE DESIGN AND CONSTRUCTION OF A TEST LOOP FOR THE STUDY OF AN ELECTROMAGNETIC PUMP AND FLOWMETER ON LITHIUM SYSTEMS (open access)

THE DESIGN AND CONSTRUCTION OF A TEST LOOP FOR THE STUDY OF AN ELECTROMAGNETIC PUMP AND FLOWMETER ON LITHIUM SYSTEMS

None
Date: September 13, 1950
Creator: Goodman, E.I. & Bakal, R.
Object Type: Report
System: The UNT Digital Library
PULSE-COLUMN OPERATING CONDITIONS FOR URANIUM RECOVERY FROM WASTE SOLUTIONS (open access)

PULSE-COLUMN OPERATING CONDITIONS FOR URANIUM RECOVERY FROM WASTE SOLUTIONS

None
Date: September 13, 1950
Creator: Larsen, H. A.; James, D. L.; Parish, G. T. & Roarty, J. D.
Object Type: Report
System: The UNT Digital Library