A portable vacuum hammer seismic source for use in tunnel environments
By: by R.D. Carroll and J.E. Magner ; prepared in cooperation with the Nevada Operations Office, Defense Nuclear Agency and the Nevada Operations Office, U.S. Department of Energy
Contributors: Magner, J. E; United States. Defense Nuclear Agency; United States. Dept. of Energy. Nevada Operations Office; Geological Survey (U.S.)
Series: Open-file report -- 93-187; U.S. Geological Survey open-file report -- 93-187
Publisher: U.S. Dept. of the Interior, Geological Survey; Books and Open-File Reports Section, Branch of Distribution
Published: 1993
Place of publication: Denver, Colo
Language: eng
Format: Microform
Number of pages: 18
Subjects: Seismic refraction method; Seismic reflection method
Notes: Distributed to depository libraries in microfiche

Shipping list no.: 94-0205-M

Includes bibliographical references (p. 18)

Microfiche. [Denver, Colo. : U.S. Geological Survey, 1994] 1 microfiche : negative