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Measurement of Mine Room Movement.
For Reference Only At Bureau Libraries :238 pages
This report describes the results of a study of instruments designed to monitor mine roof movements. The theory of such measurements is briefly reviewed and a detailed literature survey and a bibliography are presented. Eight different single and multipoint borehole extensometers that are either novel or improved versions of existing roof movement measurement instruments and permit remote or on-site reading are described in detail together with two novel instruments to monitor mine roof-to-floor convergence.
CP; Final Contract Report;
For Reference Only At Bureau Libraries
Ivor Hawkes Associates