4 Matching Results

Search Results

Advanced search parameters have been applied.
in creator/contributor: "McKinnis, W.B."  
Results: 1 - 4
open access

New observations of infiltration through fractured alluvium in Yucca Flat, Nevada Test Site: A preliminary field investigation

Description: Regional tectonics coupled with the subsurface detonation of nuclear explosives has caused widespread fracturing of the alluvium of Yucca Flat. Fractures deeper than 30 meters have been observed in boreholes. Some of these fractures are large enough to capture significant amounts of runoff during storm events. Evidence of stream capture by fractures and observations of runoff flowing into open fractures give qualitative evidence of infiltration to depths greater than several meters and possibly… more
Date: February 1, 1994
Creator: Kao, C. S.; Smith, D. K. & McKinnis, W. B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Relationship between large-hole drilling rates and compressive strength of NTS (Nevada Test Site) rock types

Description: Calculations to simulate and evaluate nuclear test containment require data on the strength of the geologic media at the work point and in the surrounding region. Studies cited in the literature reveal correlations between mechanical properties of rocks and various drilling parameters of large horizontal boring machines that share similarities with drilling assemblies used at the Nevada Test Site (NTS). An extensive selection of downhole core samples spanning the strength range of NTS rocks has… more
Date: October 1, 1987
Creator: Anderson, G. D.; Rambo, J. T.; Kusubov, A. S.; Dockery, H. A. & McKinnis, W. B.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

A preliminary guidebook for identifying stratigraphic contacts at the Nevada Test Site

Description: Lithologic variation, regional depositional trends, and the lack of written guidelines have resulted in inconsistencies in the recognition of stratigraphic contacts in drill holes at the Nevada Test Site (NTS). Stratigraphic identification, based on mineralogy of discrete samples, can be augmented by geophysical logs and downhole movies to more accurately and consistently locate contacts between units. Criteria are established for locating the base of the Pahute Mesa ash-flow tuff, the top of t… more
Date: January 1, 1992
Creator: Pawloski, G. A.; McKague, H. L.; Wagoner, J. L. & McKinnis, W.B.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Field measurements of tracer gas transport by barometric pumping

Description: Vertical gas motions induced by barometric pressure variations can carry radioactive gases out of the rubblized region produced by an underground nuclear explosion, through overburden rock, into the atmosphere. To better quantify transit time and amount of transport, field experiments were conducted at two sites on Pahute Mesa, Kapelli and Tierra, where radioactive gases had been earlier detected in surface cracks. At each site, two tracer gases were injected into the rubblized chimney 300-400 … more
Date: July 28, 1994
Creator: Lagus, P. L.; McKinnis, W. B.; Hearst, J. R.; Burkhard, N. R. & Smith, C. F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
Back to Top of Screen