Installation and monitoring of three abandoned mine crown pillar sites, Cobalt, Ontario
Subtitle: February 1992 to July 1992
By: François Charette
Contributors: Ontario. Ministry of Northern Development and Mines. Mineral Development and Rehabilitation Branch.; Canada Centre for Mineral and Energy Technology
Publisher: CANMET
Published: 1993
Place of publication: Ottawa, Ont
Language: eng
Number of pages: 60
Subjects: Pillaring (Mining) -- Ontario -- Cobalt -- Measurement.; Abandoned mines -- Ontario -- Cobalt; Time-domain reflectometry -- Ontario -- Cobalt
Notes: "Draft for discussion".

"Protected business information".

"3028.8.1"

"Work performed for Government of Ontario, Ministry of Northern Development and Mines, Mineral Development and Rehabilitation Branch."

"March 1993"

Bibliogr.

For use on site only. To consult document, please contact: Chris Hamblin, Mine Hazard Co-ordinator, Ministry of Northern Development and Mines, 933 Ramsey Lake Road, B4, Sudbury, Ont. P3E 6B5.  Tel.: (705) 670-5806; Fax: (705) 670-5803; E-mail: hamblich@epo.gov.on.ca.

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Table of contents: value: Appendix A. Q Index, NGI rock mass classification for engineering purposes; value: Appendix B. Photographs of boreholes 1, 2 and 3; value: Appendix C. Photographs of boreholes 4 to 9; value: Appendix D. Photographs of borehole 10; value: Appendix E. Typical output from visual analysis software.