Underground workings of Main Reef
- ZA HPRA A1138-A-3-3.9
- Item
- 30 June 1936
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Underground workings of Main Reef
Kruis River Cobalt Mine - Gold & Cobalt - Middelburg
Geol. Survey 1906 Lydenburg-Carolina-Belfast-Mashadadorp-Humphrey
Geological Survey 1913 N.E. Carolina - Hall
Xenoliths in Gabbro - Belfast. Tvl. J.P. Johnson