The Klipdam Property is located 45 km from Kimberley, South Africa and consists of the adjacent Holpan 161 and Klipdam 157 farms, covering an area of 3,836 hectares. The mining operations are located on the Klipdam (157) and Holpan (161) properties which have a total area of 3,836ha. Prospecting properties, Erf 1 and Erf 2004, Windsorton have also been acquired (1,146ha).Holpan was put on care and maintenance in May 2011.
At Klipdam, diamond bearing gravels are processed through a double 18 foot, low-cost, wet rotary pan plant which was completely modernized and upgraded in October 2007.All concentrate (-32+2mm) is processed through X-Ray FLOWSORT units. Tailings from the FLOWSORT are passed over mobile grease belts equipped with automated recovery systems, to recover any remaining or non-fluorescent diamonds. The final diamond recovery is done in a glove box and all diamonds are collected in a drop safe at the bottom of the glove box.
Fiscal 2011 performance statistics:
| |
Holpan |
Klipdam |
| |
Year-on-year change (%) |
|
Year-on-year change (%) |
| Production |
Volume(cubic metres) |
777,791 |
|
891,609 |
|
| Carats |
7,469 |
|
10,109 |
|
| Average grade (carats per 100 cubic metres) |
0.96 |
|
1.13 |
|
| Sales and revenue |
Sales (carats) |
8.008 |
|
10,195 |
|
| Value of Sales (US$) |
9.622.911 |
|
11,409,098 |
|
| Average value (US$ per carat) |
1,202 |
|
1,119 |
|
The increased carat production at Holpan and Klipdam was mainly attributable to grade increases of 21% and 5% at Holpan and Klipdam respectively.
Sales from Holpan were 8,008carats at an average value of US$1,202per carat, an increase in carat sales and a decrease in value per carat sold from 6,458 carats at an average value of US$492per carat in the twelve months ended February 28, 2010.
Sales from Klipdam were 10,195carats at an average value of US$1,119 per carat. Although carat sales were down from 10,817 carats in the twelve months ended February 28, 2010, the average value per carat increased from US$581 from the previous fiscal year.
Rough diamond Inventories |
Holpan (carats) |
Klipdam (carats) |
Beginning of Period* |
780 |
595 |
Production |
7,469 |
10,109 |
Rough Diamond Sales |
8,008 |
10,195 |
End of Period |
241 |
509 |
Geological setting and mineralization:
Alluvial diamond deposits preserved in fluvial-alluvial palaeochannel and deflation gravels (Rooikoppie) in Vaal River terraces.
Processing Plant:
Holpan |
Klipdam |
90,000 m3 monthly processing capacity |
90,000 m3 monthly processing capacity |
200tph DMS |
Low-cost 18ft Rotary-pans (2) |
Scrubber (1) |
Scrubber (1) |
Flow-sort X-ray (6), grease units |
Flow-sort X-ray (4), grease units |
Mineral resource/reserve estimates:
| Description of Gravel Resource |
Volume of Gravel (m3) at Indicated Classification |
Volume of Gravel (m3) at Inferred Classification |
Grade
(ct/100m3) |
Value
(USD/ct) |
Holpan
Fluvial-alluvial Gravel |
517,800 |
527,000 |
0.95 |
1,229 |
Holpan
Rooikoppie gravel |
Klipdam
Fluvial-alluvial Gravel |
989,100 |
- |
1.21 |
1,049 |
Klipdam
Rooikoppie gravel |
1,102,100 |
949,000 |
| Erf 2004, Windsorton |
404,700 |
127,000 |
0.63 |
986 |
| TOTAL |
3,013,700 |
1,603,000 |
|
|
# At 2mm bottom cut-off.
Subsequent to November 30, 2010, during December 2010 to February 28, 2011 the Company has processed 285,466 cubic metres¬. The indicated resources for Holpan are 415,600 cubic metres, grading 0.95 carats per cubic metres and the indicated resources for Klipdam are 1,907,900 cubic metres grading 1.21 carats per 100 cubic metres.
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