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MING MINE PROJECT
Technical Report for NI43-101 Compliant Resource Estimate
Please click here for a copy of the full technical report
June 2008
Technical Report to accompany the Canadian Securities Administrators National Instrument 43-101 ("NI 43-101") compliant resource estimate
On April 30th, 2008 Rambler Metals and Mining plc ('Rambler') published its first National Instrument 43-101 compliant
resource for its copper - gold Ming Mine Project. The resource was estimated using information from surface diamond drilling
and the 6 months of underground diamond drilling.
RESOURCE HIGHLIGHTS
April 28, 2008 SRK (Canada) Mineral Resource Statement
- Mineral resource estimate for the Ming Massive Sulphide Horizon
- 1807 Zone
- Measured Mineral Resource: 233,000 tonnes of 4.17% copper, 1.93 g/t gold, 7.01 g/t silver and 0.7% zinc
- Indicated Mineral Resource: 108,000 tonnes of 4.68% copper, 1.59 g/t gold, 6.77 g/t silver and 0.53% zincM
- Inferred Minerals Resource: 32,000 tonnes of 4.18% copper, 2.79 g/t gold, 6.28 g/t silver and 0.47% zinc
- Ming Zone
- Measured Mineral Resource: 252,000 tonnes of 1.88% copper, 2.62 g/t gold, 12.15 g/t silver and 0.52% zinc
- Indicated Mineral Resource: 413,000 tonnes of 1.87% copper, 2.40 g/t gold, 12.52 g/t silver and 0.58% zinc
- Inferred Minerals Resource: 1,039,000 tonnes of 1.52% copper, 1.5 g/t gold, 10.61 g/t silver and 0.7% zinc
- Mineral resource estimate for the Upper Footwall Zone
- Indicated Mineral Resource: 390,000 tonnes of 2.99% copper, 0.25 g/t gold, 2.9 g/t silver and 0.03% zinc
- Mineral resource estimate for the Lower Footwall Zone
- Indicated Mineral Resource: 8,664,000 tonnes of 1.68% copper, 0.08 g/t gold, 1.12 g/t silver and 0.01% zinc
- Inferred Minerals Resource: 2,006,000 tonnes of 1.55% copper, 0.07 g/t gold, 0.99 g/t silver and 0.00% zinc
MINERAL RESOURCE ESTIMATE
The April 28, 2008 SRK Mineral Resource Statement for the Ming Mine Project is summarized in the following table:
Ming Mine - Minerals Resource Statement - 28 April 2008* SRK Consulting (Canada) Inc |
| Resource Classification |
Quantity |
Grades |
Contained Metal |
|
(000't) |
Copper % |
Gold g/t |
Silver g/t |
Zinc % |
Copper tonnes |
Gold oz |
Silver oz |
Zinc tonnes |
| Measured |
| Ming Massives: 1807 Zone |
233 |
4.17 |
1.93 |
7.01 |
0.7 |
9,696 |
14,428 |
52,403 |
1,628 |
| : North and South Zones |
252 |
1.88 |
2.62 |
12.15 |
0.52 |
4,729 |
21,188 |
98,258 |
1,308 |
| Upper Footwall Zone |
|
| Lower Footwall Zone |
|
| Total |
484 |
2.98 |
2.28 |
9.60 |
0.61 |
14,425 |
35,616 |
150,661 |
2,936 |
| Indicated |
| Ming Massives: 1807 Zone |
108 |
4.68 |
1.59 |
6.77 |
0.53 |
5,064 |
5,531 |
23,552 |
573 |
| : North and South Zones |
413 |
1.87 |
2.40 |
12.52 |
0.58 |
7,725 |
31,875 |
166,283 |
2,396 |
| Upper Footwall Zone |
390 |
2.99 |
0.25 |
2.9 |
0.03 |
11,661 |
3,135 |
36,363 |
117 |
| Lower Footwall Zone |
8,664 |
1.68 |
0.08 |
1.12 |
0.01 |
145,559 |
22,285 |
311,990 |
866 |
| Total |
9,576 |
1.78 |
0.20 |
1.75 |
0.04 |
170,010 |
62,826 |
538,187 |
3,953 |
| Inferred |
| Ming Massives: 1807 Zone |
32 |
4.18 |
2.79 |
6.28 |
0.47 |
1,354 |
2,905 |
6,540 |
152 |
| : North and South Zones |
1,039 |
1.52 |
1.5 |
10.61 |
0.7 |
15,788 |
50,093 |
354,326 |
7,271 |
| Upper Footwall Zone |
|
| Lower Footwall Zone |
2,006 |
1.55 |
0.07 |
0.99 |
0.00 |
31,098 |
4,515 |
63,859 |
0 |
| Total |
3,077 |
1.57 |
0.58 |
4.29 |
0.24 |
48,240 |
57,514 |
424,724 |
7,423 |
|
* Mineral Resources are not Mineral Reserves and do not have demonstrated economic viability. All figures are rounded to reflect
the accuracy of the estimate. Cut off grades of 1.0 per cent copper for the massives and 1.25 per cent copper for the two
footwall zones are based on NSR model and metal prices of US$2.70/lb copper and US$650/oz gold. Zinc and silver do not contribute
to revenues.
|
MING MINE PROJECT
Massive Sulphides (1807, North and South Zones)
The copper-gold rich massive sulphides historically mined were the North and South Zones at 3.5% copper with 2.40 g/t gold.
The zone averaged 3.7 metres in thickness with a strike length of 125 metres, plunging 30 degrees to the north east over
1500 metres. Mining took place from surface to the 2700 vertical foot level where ore was trucked to the shaft on the 1800
level. Rambler Metals and Mining's new drilling has extended the North and South Zone nearly 750 metres and the 1807 Zone
400 metres beyond the old property boundary. Each of these zones is open at depth and remains a target for future exploration.
The table below summarizes the copper grade sensitivities for the 1807 Zone:
| Sensitivity Table for Measured Resources |
| Interval Above Cu % |
Quantity |
Grades |
Contained Metal |
|
(000't) |
Copper % |
Gold g/t |
Silver g/t |
Zinc % |
Copper tonnes |
Gold oz |
Silver oz |
Zinc tonnes |
| 0.00 |
289 |
3.46 |
1.65 |
6.2 |
0.6 |
9.986 |
15,311 |
57,532 |
1,732 |
| 0.25 |
276 |
3.61 |
1.71 |
6.42 |
0.62 |
9,967 |
15,180 |
56,990 |
1,712 |
| 0.50 |
258 |
3.84 |
1.79 |
6.65 |
0.66 |
9,898 |
14,834 |
55,110 |
1,701 |
| 0.75 |
249 |
3.96 |
1.84 |
6.78 |
0.67 |
9,844 |
14,706 |
54,189 |
1,666 |
| 1.00 |
233 |
4.17 |
1.93 |
7.01 |
0.7 |
9,696 |
14,428 |
52,403 |
1,628 |
| 1.25 |
222 |
4.31 |
1.99 |
7.15 |
0.72 |
9,586 |
14,229 |
51,126 |
1,601 |
| 1.50 |
209 |
4.5 |
2.08 |
7.37 |
0.76 |
9,416 |
13,993 |
49,582 |
1,590 |
| 1.75 |
202 |
4.61 |
2.13 |
7.54 |
0.79 |
9,290 |
13,801 |
48,853 |
1,592 |
| 2.00 |
192 |
4.74 |
2.18 |
7.73 |
0.82 |
9,093 |
13,446 |
47,678 |
1,573 |
| 5.00 |
70 |
7.5 |
3.08 |
10.51 |
0.97 |
5,258 |
6,942 |
23,689 |
680 |
| Sensitivity Table for Indicated Resources |
| Interval Above Cu % |
Quantity |
Grades |
Contained Metal |
|
(000't) |
Copper % |
Gold g/t |
Silver g/t |
Zinc % |
Copper tonnes |
Gold oz |
Silver oz |
Zinc tonnes |
| 0.00 |
125 |
4.12 |
1.45 |
6.36 |
0.48 |
5,168 |
5,848 |
25,651 |
602 |
| 0.25 |
125 |
4.14 |
1.45 |
6.51 |
0.5 |
5,170 |
5,821 |
26,136 |
624 |
| 0.50 |
118 |
4.36 |
1.49 |
6.51 |
0.5 |
5,151 |
5,659 |
24,725 |
591 |
| 0.75 |
117 |
4.39 |
1.5 |
6.55 |
0.5 |
5,136 |
5,642 |
24,636 |
585 |
| 1.00 |
108 |
4.68 |
1.59 |
6.77 |
0.53 |
5,064 |
5,531 |
23,552 |
573 |
| 1.25 |
104 |
4.83 |
1.63 |
6.85 |
0.55 |
5,020 |
5,446 |
22,887 |
572 |
| 1.50 |
101 |
4.91 |
1.66 |
6.93 |
0.55 |
4,975 |
5,407 |
22,574 |
557 |
| 1.75 |
96 |
5.09 |
1.73 |
7.13 |
0.57 |
4,896 |
5,350 |
22,051 |
548 |
| 2.00 |
88 |
5.39 |
1.83 |
7.48 |
0.6 |
4,734 |
5,168 |
21,123 |
527 |
| 5.00 |
34 |
9.02 |
3.08 |
11.68 |
0.89 |
3,089 |
3,391 |
12,858 |
305 |
| Sensitivity Table for Inferred Resources |
| Interval Above Cu % |
Quantity |
Grades |
Contained Metal |
|
(000't) |
Copper % |
Gold g/t |
Silver g/t |
Zinc % |
Copper tonnes |
Gold oz |
Silver oz |
Zinc tonnes |
| 0.00 |
32 |
4.18 |
2.79 |
6.28 |
0.47 |
1,354 |
2,905 |
6,540 |
152 |
| 0.25 |
32 |
4.18 |
2.79 |
6.28 |
0.47 |
1,354 |
2,905 |
6,540 |
152 |
| 0.50 |
32 |
4.18 |
2.79 |
6.28 |
0.47 |
1,354 |
2,905 |
6,540 |
152 |
| 0.75 |
32 |
4.18 |
2.79 |
6.28 |
0.47 |
1,354 |
2,905 |
6,540 |
152 |
| 1.00 |
32 |
4.18 |
2.79 |
6.28 |
0.47 |
1,354 |
2,905 |
6,540 |
152 |
| 1.25 |
32 |
4.18 |
2.79 |
6.28 |
0.47 |
1,354 |
2,905 |
6,540 |
152 |
| 1.50 |
32 |
4.19 |
2.8 |
6.28 |
0.47 |
1,352 |
2,905 |
6,516 |
152 |
| 1.75 |
32 |
4.19 |
2.8 |
6.28 |
0.47 |
1,352 |
2,905 |
6,516 |
152 |
| 2.00 |
32 |
4.2 |
2.8 |
6.28 |
0.47 |
1,355 |
2,904 |
6,512 |
152 |
| 5.00 |
4 |
5.22 |
4.11 |
7.07 |
0.77 |
201 |
508 |
874 |
30 |
The table below summarizes the copper grade sensitivities for the North and South Zones:
| Sensitivity Table for Measured Resources |
| Interval Above Cu % |
Quantity |
Grades |
Contained Metal |
|
(000't) |
Copper % |
Gold g/t |
Silver g/t |
Zinc % |
Copper tonnes |
Gold oz |
Silver oz |
Zinc tonnes |
| 0.00 |
1,094 |
0.63 |
0.93 |
5.11 |
0.21 |
6,890 |
32,701 |
179,681 |
2,297 |
| 0.25 |
580 |
1.11 |
1.59 |
8.11 |
0.34 |
6,438 |
29,649 |
151,226 |
1,972 |
| 0.50 |
409 |
1.43 |
2.04 |
10 |
0.43 |
5,853 |
26,847 |
131,602 |
1,760 |
| 0.75 |
306 |
1.7 |
2.41 |
11.32 |
0.48 |
5,202 |
23,708 |
111,361 |
1,469 |
| 1.00 |
252 |
1.88 |
2.62 |
12.15 |
0.52 |
4,729 |
21,188 |
98,258 |
1,308 |
| 1.25 |
206 |
2.05 |
2.75 |
12.89 |
0.54 |
4,225 |
18,224 |
85,421 |
1,113 |
| 1.50 |
170 |
2.19 |
2.93 |
13.74 |
0.54 |
3,725 |
16,021 |
75,130 |
918 |
| 1.75 |
116 |
2.47 |
3.34 |
15.36 |
0.48 |
2,868 |
12,471 |
57,350 |
557 |
| 2.00 |
83 |
2.71 |
3.47 |
16.99 |
0.5 |
2,243 |
9,235 |
45,217 |
414 |
| 5.00 |
|
|
|
|
|
|
|
|
|
| Sensitivity Table for Indicated Resources |
| Interval Above Cu % |
Quantity |
Grades |
Contained Metal |
|
(000't) |
Copper % |
Gold g/t |
Silver g/t |
Zinc % |
Copper tonnes |
Gold oz |
Silver oz |
Zinc tonnes |
| 0.00 |
1,436 |
0.79 |
1.14 |
5.87 |
0.28 |
11,347 |
52,642 |
271,062 |
4,022 |
| 0.25 |
1,004 |
1.09 |
1.56 |
7.59 |
0.36 |
10.948 |
50,374 |
245,089 |
3,616 |
| 0.50 |
723 |
1.37 |
1.98 |
9.45 |
0.45 |
9,909 |
46,041 |
219,742 |
3,255 |
| 0.75 |
510 |
1.68 |
2.36 |
11.42 |
0.54 |
8.561 |
38,663 |
187,090 |
2,752 |
| 1.00 |
413 |
1.87 |
2.4 |
12.52 |
0.58 |
7,725 |
31,875 |
166,283 |
2,396 |
| 1.25 |
347 |
2.01 |
2.36 |
13.19 |
0.59 |
6,984 |
26,363 |
147,342 |
2,050 |
| 1.50 |
274 |
2.18 |
2.26 |
14.1 |
0.6 |
5,966 |
19,885 |
124,061 |
1,642 |
| 1.75 |
178 |
2.5 |
2.35 |
15.46 |
0.47 |
4,459 |
13,474 |
88,645 |
838 |
| 2.00 |
134 |
2.7 |
2.47 |
17.44 |
0.55 |
3,613 |
10,626 |
75,027 |
736 |
| 5.00 |
|
|
|
|
|
0 |
0 |
0 |
0 |
| Sensitivity Table for Inferred Resources |
| Interval Above Cu % |
Quantity |
Grades |
Contained Metal |
|
(000't) |
Copper % |
Gold g/t |
Silver g/t |
Zinc % |
Copper tonnes |
Gold oz |
Silver oz |
Zinc tonnes |
| 0.00 |
2,231 |
0.95 |
1.14 |
7.24 |
0.45 |
21,196 |
81,778 |
519,361 |
10,040 |
| 0.25 |
1,895 |
1.09 |
1.28 |
7.98 |
0.5 |
20,659 |
77,998 |
486,270 |
9,477 |
| 0.50 |
1,543 |
1.25 |
1.42 |
8.9 |
0.58 |
19,290 |
70,453 |
441,571 |
8,950 |
| 0.75 |
1,181 |
1.44 |
1.5 |
10.04 |
0.66 |
17,005 |
56,951 |
381,192 |
7,794 |
| 1.00 |
1,039 |
1.52 |
1.5 |
10.61 |
0.7 |
15,788 |
50,093 |
354,326 |
7,271 |
| 1.25 |
822 |
1.63 |
1.44 |
11.54 |
0.8 |
13,399 |
38,058 |
304,989 |
6,576 |
| 1.50 |
649 |
1.7 |
1.17 |
12.53 |
0.93 |
11,033 |
24,413 |
261,454 |
6,036 |
| 1.75 |
235 |
1.88 |
1.22 |
14.09 |
0.52 |
4,411 |
9,202 |
106,281 |
1,220 |
| 2.00 |
18 |
2.14 |
2.03 |
18.32 |
0.67 |
391 |
1,194 |
10,775 |
123 |
| 5.00 |
|
|
|
|
|
|
|
|
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Upper Footwall Zone (UFZ)
The Upper Footwall Zone was discovered by Rambler Metals in 2006 during the Lower Footwall delineation drilling where RM06-04f
intersected 6.00 meters of 14.55% copper with 1.6 g/t gold. Since its discovery, five new diamond drill holes have intersected
this stringer sulphide defining it over 375 metres in length. It is important to note that the Upper Footwall Zone is only 100
metres from existing underground development.
For the Upper Footwall Zone only an indicated resource was estimated, the table below summarizes the copper grade sensitivities
for this zone:
| Sensitivity Table for Indicated Resources |
| Interval Above Cu % |
Quantity |
Grades |
Contained Metal |
|
(000't) |
Copper % |
Gold g/t |
Silver g/t |
Zinc % |
Copper tonnes |
Gold oz |
Silver oz |
Zinc tonnes |
| 0.00 |
548 |
2.34 |
0.19 |
2.35 |
0.03 |
12,834 |
3,350 |
41,440 |
165 |
| 0.25 |
548 |
2.34 |
0.19 |
2.35 |
0.03 |
12,834 |
3,350 |
41,440 |
165 |
| 0.50 |
540 |
2.37 |
0.2 |
2.38 |
0.03 |
12,791 |
3,470 |
41,298 |
162 |
| 0.75 |
450 |
2.73 |
0.23 |
2.68 |
0.03 |
12,288 |
3,329 |
38,784 |
135 |
| 1.00 |
429 |
2.82 |
0.24 |
2.76 |
0.03 |
12,098 |
3,310 |
38,068 |
129 |
| 1.25 |
390 |
2.99 |
0.25 |
2.9 |
0.03 |
11,661 |
3,135 |
36,363 |
117 |
| 1.50 |
322 |
3.33 |
0.29 |
3.21 |
0.02 |
10,718 |
3,001 |
33,218 |
64 |
| 1.75 |
276 |
3.62 |
0.32 |
3.47 |
0.02 |
9,984 |
2,838 |
30,770 |
55 |
| 2.00 |
250 |
3.8 |
0.34 |
3.62 |
0.02 |
9,503 |
2,734 |
29,107 |
50 |
| 5.00 |
50 |
7.53 |
0.77 |
6.82 |
0 |
3,801 |
1,250 |
11,068 |
0 |
Lower Footwall Zone (LFZ)
The Lower Footwall Zone was first discovered during the late 1970s by Rambler Consolidated. Rambler Consolidated originally
estimated that there was approximately 20 million tons of stringer type mineralization with an average grade of 1% copper.
Since this estimate was pre NI43-101 and therefore non- NI43-101 compliant, the data could not be relied upon. In 2005 Rambler
Metals and Mining committed two surface diamond drills to explore the Lower Footwall Zone down-plunge of the historical
property boundary. In the last 6 months Rambler has added an additional underground drilling rig to test the Lower Footwall
Zone in areas that could not be accessed by the surface drills.
For the Lower Footwall Zone an indicated and inferred resource was estimated, the table below summarizes the copper grade
sensitivities for this zone:
| Sensitivity Table for Indicated Resources |
| Interval Above Cu % |
Quantity |
Grades |
Contained Metal |
|
(000't) |
Copper % |
Gold g/t |
Silver g/t |
Zinc % |
Copper tonnes |
Gold oz |
Silver oz |
Zinc tonnes |
| 0.00 |
66,756 |
0.61 |
0.06 |
0.35 |
0.00 |
407,214 |
128,776 |
751,193 |
0 |
| 0.25 |
44,876 |
0.88 |
0.08 |
0.49 |
0.00 |
394,909 |
115,424 |
706,970 |
0 |
| 0.50 |
34,264 |
1.04 |
0.08 |
0.57 |
0.00 |
356,346 |
88,129 |
627,921 |
0 |
| 0.75 |
23,855 |
1.22 |
0.08 |
0.68 |
0.00 |
291,032 |
61,357 |
521,531 |
0 |
| 1.00 |
14,421 |
1.46 |
0.08 |
0.87 |
0.01 |
210,551 |
37,092 |
403,379 |
1,442 |
| 1.25 |
8,664 |
1.68 |
0.08 |
1.12 |
0.01 |
145,559 |
22,285 |
311,990 |
866 |
| 1.50 |
5,126 |
1.91 |
0.1 |
1.39 |
0.01 |
97,911 |
16,481 |
229,089 |
513 |
| 1.75 |
3,308 |
2.11 |
0.12 |
1.66 |
0.01 |
64,103 |
11,721 |
162,142 |
304 |
| 2.00 |
1,490 |
2.35 |
0.13 |
1.99 |
0.01 |
35.024 |
6,229 |
99,354 |
149 |
| 5.00 |
|
|
|
|
|
|
|
|
|
| Sensitivity Table for Inferred Resources |
| Interval Above Cu % |
Quantity |
Grades |
Contained Metal |
|
(000't) |
Copper % |
Gold g/t |
Silver g/t |
Zinc % |
Copper tonnes |
Gold oz |
Silver oz |
Zinc tonnes |
| 0.00 |
12,369 |
0.65 |
0.07 |
0.48 |
0.00 |
80,399 |
27,837 |
190,883 |
0 |
| 0.25 |
9,114 |
0.86 |
0.08 |
0.61 |
0.00 |
78,384 |
23,443 |
178,751 |
0 |
| 0.50 |
6,639 |
1.04 |
0.09 |
0.68 |
0.00 |
69,045 |
19,210 |
145,145 |
0 |
| 0.75 |
4,568 |
1.23 |
0.09 |
0.80 |
0.00 |
56,186 |
13,218 |
117,491 |
0 |
| 1.00 |
3,219 |
1.39 |
0.09 |
0.90 |
0.00 |
44,742 |
9,314 |
93,139 |
0 |
| 1.25 |
2,006 |
1.55 |
0.07 |
0.99 |
0.00 |
31,098 |
4,515 |
63,859 |
0 |
| 1.50 |
928 |
1.79 |
0.07 |
1.16 |
0.00 |
16,618 |
2,089 |
34,623 |
0 |
| 1.75 |
440 |
2.00 |
0.09 |
1.53 |
0.00 |
8,802 |
1,273 |
21,648 |
0 |
| 2.00 |
217 |
2.14 |
0.09 |
1.54 |
0.00 |
4,641 |
627 |
10,737 |
0 |
| 5.00 |
|
|
|
|
|
|
|
|
|
SRK Qualification and Methodology of Resource Estimation
Resource classification
Mineral resources for the Ming Mine have been classified according to the "CIM Standards on Mineral Resources and Reserves:
Definitions and Guidelines" (December, 2005) by Glen Cole, P.Geo, an appropriate Qualified Person as defined by NI43-101.
SRK visited the Rambler Property in early April, 2008 and reviewed the mineralized zones in drill core and the interpretation
completed by Rambler. A complete NI 43-101 Technical Report, which will incorporate the resource estimation and methodology,
will be filed on SEDAR within 45 days after this press release.
The resource estimation is based on a 3-D geological interpretation of the mineralized zones from 7,206 meters of historical
Consolidated Rambler Mines Limited underground drilling (1977-81) in 38 drill holes, 85,416 meters of RMM surface drilling
(2003-2008) in 86 drill holes and 6,266 meters of RMM underground drilling (2007-2008) in 38 drill holes. The geological
interpretation and modeling defined four separate, but intimately related ore zones namely; the 1807 zone, the Main Zone
(includes North and South Ming), the Upper Ming Footwall zone and the Lower Ming Footwall Zone. Density factors used to
determine tonnages were 3.31 gcm3 for the VMS massive sulphides, 2.82 gcm3 for the stringer footwall style and 3.04 gcm3 for the
semi-massive stringer upper footwall mineralization.
The modeled resources at Rambler were created using Datamine 3D modeling software with 5 x 5 x 5 m blocks. A sub-block
routine was also applied with a minimum block size of 1.25 x 1.25 x 1.25 m. Grade estimation was done on data composited to
1m intervals, confined to within modeled mineralized zones. Appropriate grade cappings were applied to the composited data.
Block grades were estimated using inverse distance squared (ID2) grade estimation methodologies. Normalized and regular
variography to estimate search distance criteria was conducted with Isatis software for Cu, Au, Ag and Zn. A single spherical
structure variogram (including a nugget effect) was constructed and fitted for each primary direction for all metals and
inputted into the Datamine Grade process.
The classified resources for the various modeled mineralized zones at the Ming Mine have been tabulated for a range of
copper cut off's. The cut off applied to the massive ore is 1% copper, whereas the cut off applied to the two footwall zones
is 1.25% copper. Metal prices of US$2.70/lb copper and US$650/oz gold were applied. Silver and zinc are reported, but do not
contribute to revenues.
For more information please review the full Technical Report of this resource statement.
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