Conference Proceedings
Underground Operators' Conference, West Coast Tasmania
Conference Proceedings
Underground Operators' Conference, West Coast Tasmania
Extension of the Rosebery Mine by Decline Access Below 17 Level
Access to the Rosebery Orebody, which dips into the western slopes of Mount Black at 45, has been achieved in sequence by the following means: - A series of adits down to 8 level - An inclined shaft (No. 1 Shaft) sunk internally from 8 level to 14 level - A vertical circular concrete lined shaft (No. 2 Shaft) sunk internally from 4 level to 19 level. Although the orebody has been fairly well defined to 19 level, deeper ore occurrences have been outlined by a series of drill holes decreasing in frequency with depth to 26 level. No. 2 Shaft (sink) was stopped some 10 m below 19 level in order to make an early start on doubled production at West Coast Mines, with the intention of subsequently extending the shaft or of driving a decline from the lowest operating horizon for deeper access. The decline approach was adopted some six years after production commenced from No. 2 Shaft. The reasons for that decision are outlined, together with an account of the constraints and design requirements imposed by commencing by a vertical shaft in the hanging wall of the orebody.
Contributor(s):
F K Sears
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- Published: 1982
- PDF Size: 0.606 Mb.
- Unique ID: P198203006