Abstract: As a part of continuous geologic and geophysical investigations at the Nevada Test Site, gamma-radioactivity measurements are being made in tunnels and drill holes to determine semiquantitatively the natural gamma radioactivity of geologic formations and the distribution of nuclear-explosion-produced radioisotopes.

Letter from D. Bailey Calvin to I. H. Kempner providing a list of state-supported medical schools in different U.S. cities from their main universities and notes that half of these are not on the same campus as the main university. He suggests that Dr. Leake will address alumni matters upon his return to Galveston and offers further assistance if needed.

The following report summarizes the geophysical studies of the rocks made in the U12e.10 tunnel of the Nevada Test Site.

From introduction: The papers comprising the various parts of this report contain the preliminary results of the U. S. Geological Survey investigations in the U12b.02 tunnel at the Nevada Test Site.

Maps of four quadrants in the Las Vegas area surveyed as part of a radiological survey, outlining "Radioactivity levels in hundreds of counts per second normalized to 500 ft above ground." Scale 1:250,000.

Introduction: "This report presents physical property analyses for 28 additional samples and is a supplement to Geological Survey Technical Letter: Area-12-1, which gave a brief summary of the geology, descriptive data on the tunnel, and X-ray, chemical, semiquantitative spectrographic analyses, and some physical properties determinations of samples collected in the U12g.01 tunnel."

From Abstract: "An Aerial Radiological Measuring Survey (ARMS) of the Las Vegas area was made for the Civil Effects Test Operations, Division of Biology and Medicine, U.S. Atomic Energy Commission, by Edgerton, Germeshausen & Grier, Inc., between May 21 and June 23, 1961. The survey was part of a nationwide program to measure present environmental levels of gamma radiation. Approximately 6000 traverse miles were flown, at an attitude of 500 ft above the ground, in a 100-mile square centered near Las Vegas. The EG&G ARMS-II instrumentation was used in the survey."

Abstract: "Fifteen in situ interval densities were calculated from the borehole gravity meter observations made in Test Well-B. The weighted average density for all the rocks sampled by the gravity meter is 1.83 gm/cc. The alluvium density ranges from 1.71 to 1.82 gm/cc and averages 1.76 gm/cc. The lake beds range from 1.91 to 1.93 gm/cc and average 1.92 gm/cc. The Rainier Mesa Member averages 1.83 gm/cc. The Tiva Canyon Member averages 1.74 gm/cc and the upper 110 feet of Topopah Spring Member has a density of 2.30 gm/cc."

Abstract: "Drill hole UCe-18 was successfully logged with the U.S. Geological Survey-La Coste Romberg borehole gravity meter to a depth of 6,488 feet. That density increases with depth is apparent in both the alluvium and volcanic rock. The in situ density of the alluvium measured by the gravity meter ranges from 1.77 to 2.34 gm/cc; the lake beds beneath the alluvium have a density of 2.22 gm/cc; and the rhyolitic rocks range in density from 2.26 to 2.47 gm/cc. The average density determined from the borehole gravity meter data for the alluvium plus the lake beds is 2.22 gm/cc and for the volcanic rocks is 2.35 gm/cc."

Letter from I. H. Kempner to Thomas L. James discussing the current state of a law suit with Sam F. Bashara and communication with Bashara himself.

Report describing the phosphorite deposits of the western United States with the objective of outlining features that are common to both the Kara Tau phosphorite deposits of Russia and the western United States deposits in an effort to define their origin.

From introduction: This report summarizes the information obtained during preparation of the lithologic log of the core and presents results of chemical analyses of marble samples collected from surface near the drill hole. The report was prepared by the U.S. Geological Survey on behalf of the Albuquerque Operations Office, U.S. Atomic Energy Commission.

Recorded data taken from field samples of filtered spring, stream, and well water, and acidified stream and lake water from the Ely quadrangle in Nevada and Utah.

Recorded laboratory analysis for samples of filtered spring, stream, and well water, and acidified stream and lake water from the Ely quadrangle in Nevada and Utah.

Recorded data taken from field samples of filtered spring, stream, and well water, and acidified stream and lake water from the Goldfield quadrangle in California and Nevada.

Recorded laboratory analysis for samples of filtered spring, stream, and well water, and acidified stream and lake water from the Goldfield quadrangle in California and Nevada. -- check report

"Field and laboratory data are presented for 1937 sediment samples from the Ely Quadrangle, Nevada; Utah. The samples were collected by Savannah River Laboratory; laboratory analysis and data reporting were performed by the Uranium Resource Evaluation Project at Oak Ridge, Tennessee." (Abstract)

"Field and laboratory data are presented for 790 sediment samples from the Goldfield Quadrangle, California; Nevada. The samples were collected by savannah River Laboratory; laboratory analysis and data reporting were performed by the Uranium Resource evaluation Project at Oak Ridge, Tennessee." (from Abstract)

"Field and laboratory data are presented for 1795 sediment samples from the Lund Quadrangle, Nevada; Utah. The samples were collected by the Savannah River Laboratory; laboratory analysis and data reporting were performed by the Uranium Resource Evaluation Project at oak ridge, Tennessee." (from Abstract)

Recorded data taken from field samples of filtered spring, stream, and well water, and acidified stream and lake water from the Lund quadrangle in Nevada and Utah.

Recorded laboratory analysis for samples of filtered spring, stream, and well water, and acidified stream and lake water from the Lund quadrangle in Nevada and Utah.

Map of the Mine Mountain Quadrangle in Nye County, Nevada.

From abstract: This report includes results of studies of crater dimension, throwout material distribution, ground motion, dust cloud growth, and long-range air blast.

This is a geological map of the Cane Spring quadrangle in Nye County, Nevada.