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FEASIBILITY WORK
|
Category
|
Gross
|
Net Attributable to Premier Group
|
Operator
|
||||
|
Tonnes (millions)
|
Grade (Au g/t)
|
Contained Metal (koz)
|
Tonnes (millions)
|
Grade (Au g/t)
|
Contained Metal (koz)
|
|
|
|
|
|
|
|
|
|
Mineral Reserves
|
|
|
|
|
|
|
|
Proved
|
-
|
-
|
-
|
-
|
-
|
-
|
Moto Group
|
Probable
|
37.8
|
3.2
|
3,940
|
22.7
|
3.2
|
2,364
|
Moto Group
|
Sub-total
|
37.8
|
3.2
|
3,940
|
22.7
|
3.2
|
2,364
|
|
|
|
|
|
|
|
|
|
Mineral Resources
|
|
|
|
|
|
|
|
Measured
|
-
|
-
|
-
|
-
|
-
|
-
|
Moto Group
|
Indicated
|
77.8
|
2.8
|
7,030
|
46.7
|
2.8
|
4,218
|
Moto Group
|
Inferred
|
98.9
|
3.8
|
12,112
|
59.3
|
3.8
|
7,267
|
Moto Group
|
Source: Refer to Qualified Persons section for details of Qualified Persons (TSX) or Competent Persons (AIM) with respect to the quotation of Mineral Reserves and/or Mineral Resources.
Exploitation of Resource Base and Future Direction
The FS evaluated the Project’s Indicated Mineral Resources of 77.8 Mt at 2.8 g/t Au for 7.0 Moz and did not take into account an additional Inferred Mineral Resource base of 98.9 Mt at 3.8 g/t Au for 12.1 Moz.
Since the completion of the PFS in August 2006, the conversion rate of Inferred to Indicated Mineral Resources has been close to 100% within the key deposits.
On this basis, the Premier Group proposes to actively develop a long term exploitation plan that includes high grade underground mining as well as expansion of planned open pits. Continued extensional exploration success further supports this initiative, with the FS, as anticipated, providing a sound start up position for future development. AMC Consultants Pty Ltd is preparing an underground concept study that will include drilling information to the end of 2007 which is expected to enhance project economics and leverage start-up capital.The Premier Gold Project is located in the north-east of the DRC and is a joint venture between L’Office des Mines d’Or de Kilo-Premier (“OKIMO”)(30%), Border Energy Pty Ltd (a Premier wholly-owned subsidiary)(60%) and Orgaman sprl (10%).
Following the completion of a PFS in August 2006, the Premier Group committed to a FS for the project. Lycopodium and Cube were appointed as the principal engineering and geological consultants respectively to manage and undertake the study. Contributors to key components of the study are as follows:
Cube Consulting
|
· Geological database management, interpretation and validation · Resource estimation · Mine design & scheduling, mine capital & operating cost estimates |
Ammtec
|
· Metallurgical testwork |
Lycopodium
|
· Metallurgical interpretation & process plant design · Infrastructure design · Project implementation · Capital & operating cost estimation |
Knight Piésold
|
· Site geotechnical & hydrological assessment · Tails storage facility design & geochemical assessment · Hydropower assessment & design · Site infrastructure design including roads, civils & bridges |
SGS Ghana
|
· Environmental and social licence assessment |
Since the PFS, an extensive infill, sterilisation and technical drilling programme consisting of over 600 holes totalling 75,000m of RC and Diamond Drilling was completed across the project including sterilisation and geotechnical drilling totalling 18,000m. Resource interpretation and estimation work used drill data available at the end of February 2007.
Geological logging, sample preparation, assaying, resource modelling and estimation works associated with the FS were conducted in accordance with Premier’s QA/QC systems. These systems were independently audited by Snowden Mining Industry Consultants (“Snowden”) in 2006 and were found to be of good industry standard with Snowden also endorsing Cube’s resource estimates and expressing an opinion on the Project’s upside potential.
Geo-statistical analysis was undertaken on the mineralised material prior to grade estimation of the resources using Ordinary Kriging on a 20x20x5m panel. Uniform Conditioning with a 5x5x2.5m SMU was applied to these estimates to yield a recoverable Resource estimate. The Mineral Resources were then reported above a range of grade cut-offs for the mining study.
As at April 2007, the estimated Project Mineral Resources[1] above a 1 g/t gold cut-off are; Indicated Mineral Resources of 77.8 Mt at 2.8 g/t Au for 7.0 Moz and Inferred Mineral Resources of 98.9 Mt at 3.8 g/t Au for 12.1 Moz[1] All the mineral resource estimates undertaken by Cube have been classified and reported in accordance with The 2004 Australasian Code for Reporting of Mineral Resources and Ore Reserves (2004 JORC Code). The 2004 JORC reporting guidelines are equivalent to the guidelines adopted for the Canadian National Instrument 43-101.
Premier Gold Mines - Premier Gold Project April 2007 |
||||||
Mineral
Resources >1.0 g/t Gold
|
||||||
Deposit
|
Indicated
|
Inferred
|
||||
Mt
|
Gold g/t
|
Gold |
Mt
|
Gold g/t
|
Gold |
|
Pakaka
|
17.52
|
2.5
|
1,393
|
-
|
-
|
-
|
Gorumbwa
|
-
|
-
|
-
|
8.29
|
5.2
|
1,374
|
Kibali
|
-
|
-
|
-
|
17.08
|
2.2
|
1,206
|
Mengu Hill
|
6.57
|
3.4
|
720
|
0.16
|
2.4
|
13
|
Mengu Village
|
1.36
|
1.8
|
77
|
-
|
-
|
-
|
Karagba
|
7.96
|
2.7
|
691
|
21.76
|
3.1
|
2,151
|
Chauffeur
|
25.51
|
3.3
|
2,695
|
24.47
|
5.6
|
4,427
|
Durba
|
2.65
|
3.3
|
277
|
3.19
|
2.3
|
238
|
Sessenge Deeps
|
-
|
-
|
-
|
11.57
|
5.2
|
1,923
|
Megi
|
-
|
-
|
-
|
4.14
|
2.1
|
277
|
Marakeke
|
-
|
-
|
-
|
2.41
|
1.7
|
134
|
Kombokolo
|
1.91
|
2.6
|
162
|
0.05
|
2.7
|
4
|
Sessenge
|
8.72
|
2.4
|
666
|
0.88
|
2.2
|
63
|
Ndala
|
-
|
-
|
-
|
0.26
|
4.0
|
34
|
Pamao
|
5.62
|
1.9
|
347
|
4.58
|
1.8
|
268
|
Total
|
77.82
|
2.8
|
7,030
|
98.85
|
3.8
|
12,112
|
Note: The Indicated Mineral Resources are inclusive of those Mineral Resources modified to produce the Mineral Reserves.
A geotechnical evaluation program using information derived from purpose drilled geotechnical diamond core holes recommends inter-berm mining angles ranging between 31° and 41° in the weathered rocks and between 35° and 57° for fresh rock. As the project matures, these parameters will be further optimised.
Whittle open pit optimizations were undertaken on each deposit based on the Indicated Mineral Resources. Mining costs were generated from first principles, benchmarked with similar operations and then applied by depth from the surface. Open pit designs were based on the US$550/oz optimization shells, with staging incorporated to yield balanced mining fleet requirements and access preferential mill feed. A total of 6 pits are planned to be mined within the Premier Gold Project encompassing total Probable Mineral Reserves of 37.8 Mt at 3.2 g/t Au for 3.9 Moz.
Moto Gold Project - Probable Mineral Reserves
|
||||||||||||
Deposit
|
Oxide
|
Transitional
|
Fresh
|
Total
|
||||||||
Mt
|
Au g/t
|
Au koz
|
Mt
|
Au g/t
|
Au koz
|
Mt
|
Au g/t
|
Au koz
|
Mt
|
Au g/t
|
Au koz
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
KCD (Durba)
|
2.7
|
3.2
|
269
|
2.1
|
3.6
|
246
|
14.3
|
3.7
|
1,682
|
19.0
|
3.6
|
2,198
|
Kombokolo
|
0.1
|
2.4
|
8
|
0.1
|
3.4
|
12
|
0.5
|
3.9
|
60
|
0.7
|
3.6
|
81
|
Mengu Hill
|
1.8
|
3.3
|
184
|
1.0
|
4.3
|
145
|
1.6
|
3.8
|
195
|
4.4
|
3.7
|
524
|
Pakaka
|
1.7
|
2.4
|
133
|
0.5
|
3.0
|
51
|
4.9
|
2.9
|
447
|
7.1
|
2.8
|
631
|
Pamao
|
0.3
|
1.6
|
14
|
0.3
|
2.0
|
21
|
1.6
|
2.2
|
114
|
2.2
|
2.1
|
149
|
Sessenge
|
1.3
|
2.2
|
89
|
0.5
|
2.8
|
43
|
2.6
|
2.6
|
218
|
4.3
|
2.5
|
349
|
Mengu Village*
|
20kt
|
1.8
|
1
|
40kt
|
2.2
|
3
|
0.1
|
2.2
|
4
|
0.1
|
2.1
|
8
|
Total
|
7.7
|
2.8
|
698
|
4.6
|
3.5
|
520
|
25.5
|
3.3
|
2,722
|
37.8
|
3.2
|
3,940
|
While the Mengu Village pit contains Probable Mineral Reserves, it has been excluded from plant feed schedules and Project financial modeling due to its comparatively small magnitude.
Pit
|
Au Predicted Recovery (%) |
Feed Proportion |
||
Oxide
|
Transition
|
Fresh
|
||
KCD
(Durba)
|
85.5
|
89.5
|
83.3
|
50%
|
Kombokolo
|
95.6
|
95.3
|
74.0
|
2%
|
Mengu
Hill
|
-
|
88.7
|
71.0
|
12%
|
Pakaka
|
88.7
|
-
|
81.1
|
19%
|
Pamao
|
90.9
|
-
|
84.4
|
6%
|
Sessenge
|
90.3
|
75.3
|
80.0
|
11%
|
Estimated processing operating costs (including general and administration) are estimated for the three types of plant feed - US$11.75 /tonne oxide, $15.38 /tonne transition and US$13.93 /tonne primary ore.
Surface mining operating costs averaged US$1.58 /tonne over the mine life on an owner mining operating basis. The cost of mining ore incorporated a premium over the unit cost of mining waste. Costs include provision for ongoing rehabilitation of mining areas.
The Project development costs are estimated at US$483M. This includes the mining fleet (US$78M), treatment plant, tailings storage facility and water dams, services, infrastructure, a hydro-electric power installation (US$80M), pre-production, working capital and contingency. The capital cost estimate was completed to a confidence level of ± 15% with the main elements summarised below:
Description
|
US$M
|
%
Total
|
Site
Establishment & Construction Costs
|
60.9
|
13
|
Treatment Plant Costs
|
75.7
|
16
|
Reagents and services
|
30.0
|
6
|
Infrastructure Costs
|
110.7
|
23
|
Mining Costs
|
111.8
|
23
|
EPCM
& Specialist Consultants
|
53.5
|
11
|
Owners costs including logistics & resettlement
|
40.3
|
8
|
Owners Operations Costs
|
2.2
|
-
|
Total Capital (including contingency) |
483.0
|
100
|
Contingency Amount Included in Above Items
|
47.4
|
11
|
Working capital and ‘first-fill’ consumables stock values have not been returned at end of mine life. Salvage values of equipment, plant and other high value items have not been included. Site closure costs are excluded, although progressive rehabilitation costs for mining areas have been included in operating cost estimates. This is consistent with the findings of the FS indicating that the Project has significant potential to extend past the evaluated mine life.
Project sunk costs to the end of September 2007 have been included for purpose of taxation calculation but do not feature directly in the calculation of total capital expenditure for the project.
DRC corporate taxes and precious metal royalties have been included, as well as major levies for expatriate labour costs. Accelerated depreciation provisions allowed under DRC legislation have been incorporated where applicable.
Evaluation of the FS was undertaken on a project basis and excludes non project costs related to agreements between Premier and OKIMO and surface rental due to the state.
Net
Project Cash Flows ($USM)
|
|||||||||
Yr 0
|
Yr 1
|
Yr 2
|
Yr 3
|
Yr 4
|
Yr 5
|
Yr 6
|
Yr 7
|
Yr 8
|
Yr 9
|
(497)*
|
83
|
114
|
129
|
126
|
110
|
84
|
49
|
114
|
20
|
* Note: US$497m includes provision of US$14m for pre-production mining expenditure related to project development.
Premier continues to wait for the formal publication of the report of a commission set up to review 60 mining agreements entered into by the para-statal companies of the DRC Government and the timetable for its release remains unclear. As far as Premier is aware, the Commission's report may include recommendations, which will apply to most mining companies, that certain financial terms of the partnerships be renegotiated.
In the meantime, Premier is seeking to finalize discussions in relation to a draft consolidated lease pursuant to the terms of the protocol agreed between OKIMO and Borgakim Mining sprl, (a Premier subsidiary), in November 2006 ("November 2006 Protocol"). It is noted that certain of the areas which originally comprised the Premier Gold Project under Premier's existing contracts with OKIMO have not been included by the Mining Registry in the OKIMO exploitation permits recently issued to OKIMO following its application in April 2007 to transform its title in accordance with the Mining Code. Following an evaluation of the new OKIMO exploitation permit co-ordinates against the co-ordinates agreed under the November 2006 Protocol, the area to be covered by the new consolidated lease is to be reduced from 2,350 sq km to 1,841 sq km.Given the solid foundation presented by the FS, Premier proposes to work with its joint venture partners to determine the best way to progress and enhance the economics of the Project in the best interests of shareholders.
Premier wishes to thank the government of the Democratic Republic of Congo and OKIMO for its ongoing support and looks forward to working with all stakeholders to successfully develop the Premier Gold Project. The successful development of the Project will result in significant benefits to all the stakeholders, including the state and the local community, and will add to the reputation of the Democratic Republic of Congo as a major participant in the international resources sector.
The Board of Premier would also like to thank the Premier staff for their contributions in bringing this Feasibility Study to fruition. In particular the Board would especially like to thank Klaus Eckhof and Andrew Dinning for their valued contributions.
Klaus has informed the Board that with the Feasibility Study completed, he would like to step down as President and CEO and as a Director of Premier. The Board also announced that in addition to his duties as Chief Operating Officer, Andrew Dinning will also assume the duties of President upon Klaus' resignation.
The Board looks forward to the development phase of the Premier Gold Project.