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Title: Apparatus and method for large tunnel excavation in soft and incompetent rock or ground

Inventors:
;
Issue Date:
OSTI Identifier:
4212080
Patent Number(s):
3881777
Assignee:
to U.S. Energy Research and Development Administration
Patent Classifications (CPCs):
E - FIXED CONSTRUCTIONS E21 - EARTH DRILLING E21D - SHAFTS
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10S - TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
NSA Number:
NSA-32-024268
Resource Type:
Patent
Resource Relation:
Patent File Date: 1974 Jan 25; Other Information: E21c9/04. Orig. Receipt Date: 31-DEC-75
Country of Publication:
United States
Language:
English
Subject:
N42200* -Engineering-Facilities & Equipment; 420200* -Engineering-Facilities & Equipment; *PROCESS HEAT REACTORS- USES; *SUBTERRENE PENETRATORS- DESIGN; *TUNNELS- EXCAVATION; FRACTURING; MELTING; ROCKS; SOILS

Citation Formats

Altseimer, J H, and Hanold, R J. Apparatus and method for large tunnel excavation in soft and incompetent rock or ground. United States: N. p., 1975. Web.
Altseimer, J H, & Hanold, R J. Apparatus and method for large tunnel excavation in soft and incompetent rock or ground. United States.
Altseimer, J H, and Hanold, R J. Thu . "Apparatus and method for large tunnel excavation in soft and incompetent rock or ground". United States.
@article{osti_4212080,
title = {Apparatus and method for large tunnel excavation in soft and incompetent rock or ground},
author = {Altseimer, J H and Hanold, R J},
abstractNote = {},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1975},
month = {5}
}