Preventing Methane Ignitions in Continuous Miner Headings
Description
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National and Sector-Specific Social and Economic Implications of Selecting Capital or Labour Intensive Methods of Coal Production
2002
Scenario modelling of the sector wide and national employment and economic effects of production method choice in underground coal mining, for planners and policy makers.
What this report foundCompares labour intensive mechanised drill and blast underground mining with capital intensive bord and pillar using continuous miners, and adds the option of...
Evaluation of Ground Geophysical Techniques on the Waterberg Coal Fields
2008
Interim account of trial ground surveys along a profile in the Waterberg coalfield, for exploration geologists weighing survey cost against the structural detail mine planning needs.
What this report foundElectrical and electromagnetic ground surveys were run over a Waterberg profile with borehole logs and three dimensional seismic data as control, to test...
A Preliminary Investigation Into the Geotechnical Interpretation of Geophysical Logs
2004
Compares a full suite of downhole sondes against geotechnical core logging over the 5 m above three coal seams, for geologists and rock engineers assessing roof conditions.
What this report foundGeophysical logging of boreholes above three Witbank seams identified clay rich matrices, stiffness changes, bedding planes and the principal stress direction...