Evaluation of Roof Bolting Requirements Based on In-Mine Bolter Drilling Progress Report Page: 2 of 7
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Quarterly Progress Report
DISCLAIMER
This report was prepared as an account of work sponsored by an agency of the
United States Government. Neither the United States Government nor any agency
thereof, nor any of their employees, makes any warranty, express or implied, or assumes
any legal liability or responsibility for the accuracy, completeness, or usefulness of any
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sarily constitute or imply its endorsement, recommendation, or favoring by the United
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herein do not necessarily state or reflect those of the United States Government or any
agency thereof.
ABSTRACT
More field tests have been performed. A trendline analysis method has been de-
veloped. This method would improve the accuracy in detecting the locations of fractures
and in determining the rock strength.1
DE-FC26-O01NT41056
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Peng, Syd S. Evaluation of Roof Bolting Requirements Based on In-Mine Bolter Drilling Progress Report, report, April 15, 2003; United States. (https://digital.library.unt.edu/ark:/67531/metadc736728/m1/2/: accessed April 18, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.