Silicon Investor (SI) -- The First Internet Community

STOCKTALK

We've detected that you're using an ad content blocking browser plug-in or feature. Ads provide a critical source of revenue to the continued operation of Silicon Investor. We ask that you disable ad blocking while on Silicon Investor in the best interests of our community. If you are not using an ad blocker but are still receiving this message, make sure your browser's tracking protection is set to the 'standard' level.

Gold/Mining/Energy : SOUTHERNERA (t.SUF) -- Ignore unavailable to you. Want to Upgrade?

To: Ron S. who wrote (1912)	8/10/1998 2:41:00 PM
From: VAUGHN	Read Replies (1) \| Respond to of 7235

Hello Ron Sorry, but DeBeers and the Russians have not been publishing such information to my knowledge. Non of the papers I have had access to have ever referenced this subject. I would imagine it is fairly typical and probably more important over older pipes in arid climates (previously sub-tropical)such as many of those in the RSA, and Botswanna, than it might be say in the NWT for example, where the emplacement ages are between 70ma and 30ma ago and glaciers have long since scraped away most overburden. I suspect Argyle had such an overburden concentration but again I do not have first hand information. Perhaps you should give Argyle Diamonds Australia in Perth a call and ask them? Tel: (61-8) 9482 1166 Fax: (61-8) 9482 1161 You might also consider calling Kim Freeman or asking Chris if he has the time. I hope to see HB up here this week and if I do I'll ask him. Regards

To: Ron S. who wrote (1912)	8/10/1998 2:47:00 PM
From: Valuepro	Read Replies (1) \| Respond to of 7235

Ron and Vaughn, The term is surficial enrichment. To my knowledge, a "rule of thumb" between overburden yields and ore yields does not exist. The overall yields on M-1 may not be too much higher than already anticipated over the length of the pipe. As Vaughn has suggested, however, we may look to down slope gravels for possible enhancements to the overall project. Now, if these deposits are economic on Marsfontein lands, who gets them? Where does the M-1 joint venture end, and where does SUF's larger interests begin? I suppose some of this may even extend on to 100% owned KLP lands. ValuePro

To: Ron S. who wrote (1912)	8/18/1998 7:59:00 AM
From: Ron S.	Read Replies (2) \| Respond to of 7235

Highlights from The Northern Miner Aug 17-23. SouthernEra forges ahead at Marsfontein At M1, minable reserves are pegged at 512,400 tonnes averaging 3.08 carats per tonne. The reserves account for 15% dilution and are estimated to a depth of 100 metres. Current reserves are sufficient for two years of production, though additional tonnage has been intersected to a depth of 200 metres. In addition, there are several nearby pipes and fissures that remain unexplored. At Leopard fissure, development ore is being stockpiled, with processing in a 300-tonne-per hour mobile recovery plant to begin in February. The plant is expected to process 10,000 to 12,000 tonnes of material per month. The Leopard fissure, which hosts a resource of 3.8 million tonnes grading 0.753 carat, is one of two fissures being developed on farms wholly owned by SouthernEra. The other, Sugarbird hosts 4.48 million tonnes at an as-yet-undetermined grade. "It has been full-speed ahead, ..." says Jennings. "By year-end, we should be the second-largest producer of diamonds in South Africa ...". ------------------- Article is substantially longer, but repetitious of previous posts. No URL - read the old fashion way. Regards.

To: Ron S. who wrote (1912)	8/31/1998 9:53:00 AM
From: Ron S.	Read Replies (2) \| Respond to of 7235

OFF TOPIC - The Diavik project 300 km northeast of Yellowknife increased the previous estimate by 10 million carats to 133 million grading at 3.5 carats per tonne. Pipe A-418 - 9.0 mil tonnes @ 3.7 c/t @ US$56/ct Pipe A-154S - 12.0 mil tonnes @ 4.8 c/t @ US$63/ct Pipe A-154N - 11.5 mil tonnes @ 2.4 c/t @ US$35/ct Pipe A-21 4.9 mil tonnes @ 3.0 c/t @ US$56/ct First production has been pushed back by six months to 2nd Qtr 2002. Processing rates have been estimated at 1.5 - 1.9 million tonnes / year. At full, open-pit production, the operation is estimated to produce 6-8 million carats per year , dropping to 3-4 million carats after year 15. The mine life is estimated at 16-22 years. ------------ Summarized from The Northern Miner Aug 31-Sept6 1998 Vol. 84 No.27 Page1.