Coaltech Research Association

Frictional Ignitions Potentials Map for South African Coal Mines

T F Ngobeni

Description

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Detection of Old Workings, Sinkholes, Underground Fires and Acid Mine Pollution Using Geophysics and Airborne Thermal Infrared Imagery

Michael van Schoor

2002

Field trials at four collieries comparing ground and airborne geophysical methods, with case studies and an applications guideline for the Witbank and Highveld collieries.

What this report foundMicro-gravity, electrical resistivity and time domain electromagnetics located the boundary between old workings and virgin ground, but no ground technique...

Development of a Horizontal Winnower for the Beneficiation of Fine Coal

Proof of concept work on dry beneficiation of minus 6 mm coal, combining airflow modelling and simulation with a laboratory winnowing box, for plants short of process water.

What this report foundHorizontal air winnowing separated fine coal by particle size and density in laboratory experiments, supported by equation of motion modelling and...

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