734 Matching Results

Search Results

prev Results: 49 - 72 next
open access

300 Area: December 11 Through December 17

Description: This report discusses the operation of the Hanford Reservation`s 300 Area for December 11 through December 17, 1945. They discuss: extrusion, canning, slug testing, a magnesium chloride flux, and the composition changes of a aluminium-silicon dip bath.
Date: December 21, 1945
Partner: UNT Libraries Government Documents Department
open access

The Direct Pouring of Liquid Metal from the Reduction Bomb

Description: By the time regular crude biscuit production was interrupted at Ames on November 9, 1944, we had made well over 100 special experimental castings by pouring the liquid metal directly from the bomb. The workmen on the regular crude production line were alternating these special castings with the regular runs without the assistance of the research group. The process had reached a state of development 'wherein the castings were made by pouring batches of about 135 pounds of liquid metal directly f… more
Date: March 9, 1945
Creator: Wilhelm, H. A.
Partner: UNT Libraries Government Documents Department
open access

Casting Uranium Bars as a Substitute for the Extrusion Process

Description: The usual method of producing uranium slugs for the reaction pile is to cast the metal into billets which are extruded into rod about 1.45 inches in diameter. Slugs are then machined from this to the final size of 1.359 inches in diameter by 8 inches long. Extrusion is done in the gamma range at a temperature of about 1000 C, where the metal is soft enough to be extruded at relatively low pressures. This operation is difficult and expensive and the product is not entirely satisfactory. The bill… more
Date: January 1, 1945
Creator: Lindlief, W. Earl
Partner: UNT Libraries Government Documents Department
open access

Comparison of observed and calculated flattening at 105-D

Description: The total power output of a unit may be represented by the power output of the most productive tube or tubes multiplied by a quantity designated as the ``number of effective tubes.`` The number of effective tubes observed at 105-D under two different arrangements of poisoned columns has been compared with values of this quantity calculated from theory. It was found that in each case the observed number of effective tubes was about 5% less than the ideal number obtainable by an optimum arrangeme… more
Date: February 14, 1945
Creator: Gast, P. F.
Partner: UNT Libraries Government Documents Department
open access

Separations process batch size

Description: A maximum batch size of 400 g Pu-239 is favored. The upper safe limit of product batch size is over 1 kg.
Date: June 9, 1945
Creator: Mackey, B. H.
Partner: UNT Libraries Government Documents Department
open access

River water temperature survey

Description: Data acquired from the temperature survey of the Columbia River, April 2, 1945, is presented.
Date: May 7, 1945
Creator: Jordan, W. E.
Partner: UNT Libraries Government Documents Department
open access

Polonium production neutron flux in bismuth columns

Description: On the basis of polonium assays by the customer, an improved equation for the prediction of the polonium content of a bismuth tube has been developed.
Date: December 3, 1945
Creator: Wende, C. W. J.
Partner: UNT Libraries Government Documents Department
open access

Manual of Operations for the S-50 Plant

Description: It is recognized that the S-50 plant operations are far from standardized and therefore any manual will require continual revision to keep it up to date. Even during the period of writing this first edition, many changes occurred and were incorporated in the manual. Such revisions could delay indefinitely the issuance of the manual and it was felt that in its present form it could be useful in the training of new plant personnel. The specific purpose of the process employed by the Ferclave Corp… more
Date: June 1, 1945
Creator: R.T., Overman
Partner: UNT Libraries Government Documents Department
open access

The Site B Foundry (Final Report on Part I of P.A. No. 151-ML-54-2, F.S. 41)

Description: The Site B Foundry is equipped for the melting and casting of tuballoy and its alloys. Castings weighing up to 750 pounds and as long as 40 inches can be made. Melting can be carried out in the vacuum, in inert gases or under fluxes. Heating is by high frequency induction. A description of the generally foundry layout, the furnace construction and operation, and of the auxiliary equipment is given in this report. The casting technique used in the Site B Foundry is designed to minimize piping an… more
Date: February 12, 1945
Creator: Lauletta, Paul
Partner: UNT Libraries Government Documents Department
open access

Metallurgical Laboratory, Chemical Research - Radiation Chemistry, Report for the Period Ending January 15, 1945

Description: Technical report with short reports covering (1) Effect of radiation on water and aqueous systems; (2) Effect of neutrons on graphite; (3) Effect of radiation on solid compounds; and (4) Scattering, stopping-power, ion-pair production, etc.
Date: February 1, 1945
Creator: Burton, Milton, 1902- & Allen, A. O. (Augustine O.)
Partner: UNT Libraries Government Documents Department
open access

A Method of Recovering Thorium from Slag Materials

Description: Abstract. a method of recovering thorium from slag from the bomb process of producing thorium has been developed. HCl and NaOH are the only chemicals required in quantity. Materials required for a representative slag are given.
Date: March 23, 1945
Creator: Johnson, Oliver & Fisher, R. W.
Partner: UNT Libraries Government Documents Department
open access

Chemical Research -- Extraction and Properties of U233; Report for the Period Ending December 15, 1944

Description: Technical report containing short articles on (1) Determination of physical constants for U233; (2) Determination of decay chain of U233; (3) Extraction of U233; (4) Extracting solvents for uranium; (5) Factors affecting the extraction uranium and thorium by organic solvents, especially ether; and (6) Analysis of ore samples for protoactinium.
Date: February 24, 1945
Creator: Seaborg, Glenn T. (Glenn Theodore), 1912-1999; Manning, F. M. & Katzin, L. I.
Partner: UNT Libraries Government Documents Department
open access

Preliminary Report on a Colorimetric Method for the Determination of Microgram Quantities of Thorium : Experiments in the Dissolution of O2 Metal [UO2]

Description: Abstract. thorium can be precipitated as a salt of p-dimethylaminoazophenylarsonic acid at a pH of about 1.5. the precipitate, collected on a sintered glass filter is washed with dilute ammonium hydroxide to dissolve the dye. the amount of thorium is determined by measuring the concentration of the dye spectrophotometrically at a wavelength of 450 millimicrons. Zirconium, which interferes, can be separated and determined using the same reagent in strong hydrochloric. the behavior of thorium… more
Date: January 1, 1945
Creator: Byerly, W.; Niedrach, L.; Davin, W.; Dyas, H. & Bane, R. W.
Partner: UNT Libraries Government Documents Department
open access

Complexing Agents for the Solvent Extraction of Uranium from Thorium. I. The Use of Thiocyanate in the Extraction of Uranium. II. The Use of Antipyrine in Solvent Extraction

Description: Abstract. In the first section of this technical report a new method of extracting uranium from thorium nitrate solution is discussed. This method consists of extracting an aqueous solution of thorium nitrate, nitric acid, sodium sulphate, and potassium thiocyanate with hexone. By this procedure, using an equal volume of hexone it is possible to extract 83 percent of the uranium while only 0.3 percent of the thorium is extracted. other experiments show that even greater separations are possi… more
Date: February 16, 1945
Creator: Reas, W. H.
Partner: UNT Libraries Government Documents Department
open access

Analysis of Iron in Thorium, Beryllium, and Cerium

Description: Introduction. the colorimetric determination of iron based on the formation of the colored ferrous-1,10-phenanthroline complex has been used successfully by a number of investigators. In this technical report, its adaptation to the routine determination of iron in cerium, thorium, and beryllium metals and their compounds is described.
Date: September 10, 1945
Creator: Ericson, R. P & Fornefeld, E. J.
Partner: UNT Libraries Government Documents Department
open access

The Spectrographic Analysis of Beryllium and its Compounds

Description: Abstract. Spectrographic procedures for determining small amounts of the common contaminants in beryllium and its compounds are described. Suggestions relative to the preparation of synthetic standards are also given.
Date: June 22, 1945
Creator: Smith, A. Lee (Albert Lee), 1924-
Partner: UNT Libraries Government Documents Department
open access

Extraction of Uranyl Nitrate and Thorium Nitrate by Organic Solvents

Description: Abstract. The separation of uranyl nitrate from aqueous solutions of 0.635 M thorium nitrate, 3 M nitric acid and 3 M calcium nitrate by extraction with organic solvents has been investigated. Solvents which gave good separations were 2-tthyl hexyl acetate, ethyl benzoate, n-butyl either and beta-beta- dichloroethyl ether. In general, higher esters, ethers and alcohols are better for separating uranium from thorium that the lower homologues. Several solvents were tested at lower nitric acid… more
Date: November 5, 1945
Creator: Johnson, O. & Newton, A. S.
Partner: UNT Libraries Government Documents Department
open access

Precipitation of Thorium Oxalate from Nitric Acid Solutions

Description: Introduction. It has been known for a long time that thorium is precipitated by oxalic acid in acid solutions, but a survey of the literature showed no study of the limits of the acidity and oxalic acid excess which yield quantitative results. V. I. Spitzin reports on the solubility of thorium oxalate in varying concentrations of several acids, but the effect of an excess oxalic acid is not included. Since solutions are sometimes presented for analysis that contain more than the recommended … more
Date: October 5, 1945
Creator: Ayers, A. S.
Partner: UNT Libraries Government Documents Department
Back to Top of Screen