In the progress report for the period October 1960 to February 1961 (FRI Technical memo 2/1961) certain phosphorus contents of Waterberg coal samples were reported. It was decided that further investigations be undertaken, with particular regard to the distribution of phosphorus in various specific gravity fraction of coal the coal.
Reference:
Savage, W. 1961. The phosphorus content of Waterberg coal. http://hdl.handle.net/10204/12824 .
Savage, W. (1961). The phosphorus content of Waterberg coal Retrieved from http://hdl.handle.net/10204/12824
Savage, WHD The phosphorus content of Waterberg coal. 1961. http://hdl.handle.net/10204/12824
Savage W. The phosphorus content of Waterberg coal. 1961 [cited yyyy month dd]. Available from: http://hdl.handle.net/10204/12824