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|To improve quality control of roof conditions, a program was carried out at Elliot Lake uranium nines in Ontario, Canada to test a portable TV camera system. This camera has a 29 mm diameter probe and is capable of identifying crock locations, crack width and approximate dip direction. The extent of fractures to the roof was checked with the aid of a vacuum system by placing packers in various boreholes and checking for communication. The removal of some rock bolts indicated an increase in fracture extent.|
Additional chapters/articles from the SME-ICGCM book Proceedings Second Conference On Ground Control In Mining
|A New Approach To The Design Of Multi-Entry Developments For||Manifestation Of Mine Pressure And Its Relations To Overlyin||Geotechnical Investigation For A Single Entry Design For Lon||Roof Falls And Caving In Longwall Mining Operations||Support Resistance And Roof Behaviour Of A Longwall Face Wit||State Of The Art Testing Of Powered Roof Supports||Some Structural Aspects Of Designing The Shield Supports||Design Considerations For Angle Bolters||Machine Design Parameters For High Seam Truss Bolting Applic||Design Trade-Off For Angle Roof Drilling||Hydraulic Tensioning Of A Birmingham Roof Truss||Current Trends In Roof Truss Hardware||The Search For A Method To Provide Warning Of Coal And Gas O||Methods Used To Monitor Roof Geology And Entry Supports||A Method For Estimating Western Coal Strengths From Point Lo||Coping With High Lateral Stresses In An Underground Illinois||Alternatives For Controlling Cutter Roof In Coal Mines||Remote Sensing Techniques In Mine Planning - Applications An||The Use Of A Graphic Mini-Computer System As A Rock Mechanic||Greater Safety With Increased Productivity Coal Mining Opera||Critical Roof Span Approach To Selection Of Proper Coal Mine||Roof Bolt Bond Tester; A Device For Nondestructive Testing O||Remote Control Roof Bolting||Development Cooperation Between Operator And Manufacturer -||Research, Development, And Use Of Steel-Fiber-Reinforced Con||TV Borehole Inspection And Vacuum Testing Of Roof Strata||Use Of Automated Resistivity System To Locate Potential Subs||Control Of Mine Subsidence Utilizing Coal Ash As A Backfill||Surface Flooding-Considerations For Mining Facilities Site S||The Formation And Effects Of Transient Abutment Stress Durin||Some Technical Considerations When Mining Under Bodies Of Wa|