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Schmidt hammer test method for field determination of physical properties of zeolitized tuff
John R. Ege, Danny R. Miller, Walter Danilchik
1970, Open-File Report 70-117
The L-type Schmidt hammer is a hand-carried impact instrument that was originally designed and developed to test the compressive strength of concrete. When properly impacted against a stiff material the device measures the amount of rebound of a spring-loaded hammer, with the rebound of the hammer being directly proportional to...
Reconnaissance geology of the Wadi Wassat quadrangle, Kingdom of Saudi Arabia
William C. Overstreet, Darwin L. Rossman
1970, Open-File Report 70-248
The Wadi Wassat quadrangle covers an area of 2926 sq km in the southwestern part of the Kingdom of Saudi Arabia. The west half of the quadrangle is underlain by crystalline rocks of the Arabian Shield, but in the eastern half of the quadrangle the Precambrian rocks are covered by...