The purpose of this investigation was in the firs instance to determine what yields of low ash products could be expected from the duffs, such products to be suitable.
Reference:
La Grange, C. 1965. Investigation of samples of selected duff coals for Rand Mines LTD., aimed at producing low ash products. http://hdl.handle.net/10204/13049 .
La Grange, C. (1965). Investigation of samples of selected duff coals for Rand Mines LTD., aimed at producing low ash products Retrieved from http://hdl.handle.net/10204/13049
La Grange, CC Investigation of samples of selected duff coals for Rand Mines LTD., aimed at producing low ash products. 1965. http://hdl.handle.net/10204/13049
La Grange C. Investigation of samples of selected duff coals for Rand Mines LTD., aimed at producing low ash products. 1965 [cited yyyy month dd]. Available from: http://hdl.handle.net/10204/13049
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