From summary: The University of Colorado, under contract with the Los Alamos Scientific Laboratory (LASL), is currently performing an evaluation of geochemical relationships of water and sediments and seasonal variations to uranium for the South Platte drainage of northeastern Colorado. As a preliminary part of this study, samples were collected from 125 sites near Sterling and Fort Morgan, Colorado, during the period from December 20, 1976, to January 15, 1977. During this period the weather in the area was clear to partly cloudy, with daytime temperatures ranging from -12 to 12 C. Only a trace of precipitation, in the form of very light snow flurries, occurred during the sampling period. The sample site locations and numbers (the first two digits have been omitted) are shown on Plate I.

From introduction: The purpose of this report is to make available to the public the results of a hydrogeochemical survey for uranium in the stream and lake waters and sediments of the Susitna River basin, Alaska. This work was done by the Los Alamos Scientific Laboratory (LASL) for the US Energy Research and Development Administration (ERDA) as part of the National Uranium Resource Evaluation (NURE) program.

From introduction: This report describes work done in the Noatak and portions of the Baird Mountains and Ambler River, Alaska, National Topographic Map Series (NTMS) quadrangles (1:250 000 scale) by the Los Alamos Scientific Laboratory (LASL) as part of the nationwide Hydrogeochemical and Stream Sediment Reconnaissance (HSSR).

Notes Based on a set of five lectures given by R. Serber during the first two weeks of April 1943, as an "indoctrination course" in connection with the starting of the Los Alamos project.

It is proposed to reduce the initial wall hangup and consequent plasma contamination of a stabilized pinched discharge by reducing the Bz pressure difference across the current sheath to nearly zero at early times. Two methods for accomplishing this are proposed, both involving multistage programming of the Bz system.

The stability of a linear pinch is investigated by means of the "6W" formalism of E. A. Frieman. It turns out that when attention is confined to the surface layers of the plasma, convenient stability criteria can be deduced for very general cylindrically symmetric distributions of magnetic field and plasma.

Delta-stabilized plutonium can be welded to itself or almost any other metal using the inert-gas metal-arc process. Equipment and procedures suitable for the welding of delta-stabilized plutonium under various conditions are described.

A sphere of LiD 2 feet in diameter was irradiated by 2 x 10<sup>15 14 Mev neutrons. Samples of Li<sup>7 metal were positioned at various radii for the irradiation. An analysis of these samples for tritium led to a determination of the number of tritons produced by 14 Mev neutrons acting on Li<sup>7 in a LiD system.

Recent measurements on the long counter efficiency in which comparisons were made with the (n, p) scattering cross section, additional variations in efficiency were found which varied slowly with neutron energy but were still correlated with the total neutron cross section of carbon. Because of these variations in efficiency there are errors in the fission cross sections reported in LA-1714. Corrections to these data have been given here.

By use of small magnetic probes inserted into the discharge, the magnetic field distributions in the interior of a high-power pinched discharge have been measured as a function of time. From these data the current distributions can be deduced. By applying a static pressure calculation, in the cases when the radical pinch accelerations are small, the plasma pressure nkT in the pinch has been determined, with superimposed axial magnetic fields, and for stable and unstable configurations.

The use of quartz tubing for sampling molten plutonium and for casting rods is described. These procedures offer cheap and easy-to-use methods for obtaining molten samples and for casting long rods with small diameters.

A measurement of the [Lithium-7] reaction cross section by absolute counting of the tritium betas is described. The cross section was measured at several neutron energies between 4 Mev and 15 Mev. A comparison with results by emulsion techniques is given.

Report documenting the results of chemical analysis for 1370 water and 1951 sediment samples in the Butte quadrangle, Montana. It includes an overview of the area, methods, data analysis, and evaluation.

Report documenting the results of chemical analysis for 1518 water and 1604 sediment samples in the Durango quadrangle, Colorado. It includes an overview of the area, methods, data analysis, and evaluation.

Report documenting the results of chemical analysis for 1060 water and 1240 sediment samples in the Trinidad quadrangle, Colorado. It includes an overview of the area, methods, data analysis, and evaluation.

Report documenting the results of chemical analysis for 1580 water and 1720 sediment samples in the Elk City quadrangle, Idaho/Montana. It includes an overview of the area, methods, data analysis, and evaluation.

Report documenting the results of chemical analysis for 982 water and 1155 sediment samples in the Santa Fe quadrangle, New Mexico. It includes an overview of the area, methods, data analysis, and evaluation.

Report documenting the results of chemical analysis for 1583 water and 503 sediment samples in the Dalhart quadrangle of northeastern New Mexico, northwestern Texas, and western Oklahoma. It includes an overview of the area, methods, data analysis, and evaluation.

From abstract: "An apparatus is described which automatically separates a flow of drops into a series of equal samples."

A report discussing HSSR results for the Leadville NTMS Quadrangle

A report discussing HSSR results for the eastern portion of the Montrose NTMS Quadrangle

Discussing samples collected by the Los Alamos National Laboratory for a detailed geochemical survey of uranium in the northern San Andreas Mountains and the Oscura Mountains of south-central New Mexico.

A report discussing a detailed geochemical survey for uranium in and around the Grants mineral belt in New Mexico

This report describes the work of a hydrogeochemical and stream sediment reconnaissance done in the Ekalaka quadrangle, Montana.