v. 1. Main text

v. 2. Appendices: Appendix A. 1986 report on "Investigation of abandoned mine hazards sites within the Municipality of Bruce Mines Ontario" / by E.J. Leahy ; Appendix B. A-Cubed 1985 report on ground probing radar surveys for old stopes, Bruce Mines, Ontario ; Appendix C. 1988 report on "Preliminary study, abandoned mine hazards, Bruce Mines, Ontario" / by Trow Ontario Ltd. ; Appendix D. Additional reports ... on specific investigation areas in Bruce Mines / by E.J. Leahy ; Appendix E. MultiVIEW Geoservices Inc. 1990 report on geophysical surveys to locate old mine workings, Bruce Mines, Ontario ; Appendix F. Diamond drillholes logs, holes BM90-1 to BP90-73 ; Appendix G. Airtrack hole records, 1990 drilling, holes BP90-1 to BP90-73 ; Appendix H. Memo from P.B. McCrodan, Director MOL, to Bill Good, Mine Recorder, Timmins, January 18, 1982 on "Partial history of subsidence in Ontario mines" ; Appendix I. Typical monitoring instrumentation.