Summary
Compass' base and specialty metal resource inventory is recorded as Global Resources and where appropriate is subdivided into oxidised and sulphide resources.
Oxide and Sulphide resources will be processed using different metallurgical circuits due to the differing mineralogy of the two resource types.
The results of the 2006 drilling programs have not been incorporated into the resource inventory, which will be updated upon completion of the ongoing drilling programs as part of future feasibility studies.
The resources given herein will be subject to the HNC joint venture (Compass 50%; HNC 50%).
| Global Base and Specialty Metals Resources |
| |
Mt |
%Cu |
%Pb |
%Co |
%Ni |
g/t Ag |
| Browns |
|
|
|
|
|
|
| Measured |
12.2 |
0.54 |
3.76 |
0.119 |
0.096 |
10.5 |
| Indicated |
10.1 |
0.34 |
4.77 |
0.111 |
0.093 |
13.8 |
| Inferred |
17.7 |
0.55 |
4.93 |
0.100 |
0.083 |
14.3 |
| Total *1 |
40.0 |
0.49 |
4.53 |
0.109 |
0.090 |
13.0 |
| Browns East |
|
|
|
|
|
|
| Inferred |
30.5 |
1.29 |
1.28 |
0.13 |
0.13 |
11.0 |
| Area 55 |
|
|
|
|
|
|
| Indicated *2 |
12.2 |
0.49 |
0.56 |
0.14 |
0.14 |
N/A |
| Mt. Fitch |
|
|
|
|
|
|
| Indicated |
1.3 |
0.60 |
N/A |
0.21 |
0.20 |
N/A |
| Total |
84.0 |
0.78 |
N/A |
0.12 |
0.11 |
N/A |
| Contained Metals |
K tonnes |
658 |
2203 |
97 |
93 |
|
*1 Cut offs >0.5% Cu, 3% Pb or 0.10% Co (Hellman & Schofield)
*2 Cut off >0.5% Cu, <0.5% Cu >0.05% Co (Knox partners)

Oxide
The oxide resource inventory is comprised of weathered to semi-weathered mineralisation which is close to the surface.
| Oxidised Copper Cobalt Nickel Resources |
| |
Mt |
%Cu |
%Co |
%Ni |
Value A$/Tonne*5 |
| Browns |
|
|
|
|
|
| Measured |
2.20 |
1.06 |
0.12 |
0.10 |
135 |
| Indicated |
0.32 |
0.80 |
0.11 |
0.10 |
114 |
| Inferred |
0.12 |
0.81 |
0.09 |
0.09 |
105 |
| Total *3 |
2.64 |
1.02 |
0.12 |
0.10 |
132 |
| Area 55 |
|
|
|
|
|
| Indicated *4 |
5.48 |
0.78 |
0.14 |
0.15 |
135 |
| Mt Fitch |
|
|
|
|
|
| Indicated |
1.3 |
0.60 |
0.21 |
0.20 |
161 |
| Total |
9.4 |
0.82 |
0.14 |
0.14 |
101 |
| Contained
Metals |
K tonnes |
77 |
13 |
13 |
|
*3 Cut off grades 0.5% Cu or 0.10% Co
*4 Cut off 0.3% Cu
*5 At Exchange Rate $0.70 and price per pound US$ 2.00 Cu, $12.00 Co, $6.50 Ni
| Additional Lead Oxide Resource |
| |
Mt |
%Cu |
%Pb |
%Co |
%Ni |
| Browns |
|
|
|
|
|
| Measured |
0.58 |
0.15 |
4.48 |
0.04 |
0.04 |
| Indicated |
0.06 |
0.13 |
4.31 |
0.05 |
0.05 |
| Inferred |
0.07 |
0.05 |
3.38 |
0.02 |
0.03 |
| Total |
0.70 |
0.14 |
4.36 |
0.04 |
0.04 |
Cut off grade 3.0% Pb (outside area of copper resource above)

Sulphide
The sulphide resource inventory is comprised of fresh, unweathered material, which is found at depth relative to oxide resources.
| Browns Sulphide Resource |
| Ore Type |
Class |
Mt |
% Cu |
% Pb |
% Co |
% Ni |
g/t Ag |
| Cu/Co/Ni Sulphide |
| |
Measured |
3.4 |
0.96 |
2.40 |
0.145 |
0.118 |
11 |
| |
Indicated |
2.8 |
0.82 |
2.40 |
0.134 |
0.113 |
11 |
| |
Inferred |
8.1 |
1.03 |
3.49 |
0.120 |
0.096 |
14 |
| |
Total |
14.4 |
0.97 |
3.02 |
0.129 |
0.105 |
13 |
| Pb/Cu/Co Sulphide |
| |
Measured |
6.1 |
0.15 |
5.30 |
0.112 |
0.087 |
12 |
| |
Indicated |
6.9 |
0.12 |
5.94 |
0.103 |
0.085 |
15 |
| |
Inferred |
9.4 |
0.15 |
6.23 |
0.083 |
0.073 |
14 |
| |
Total |
22.3 |
0.14 |
5.89 |
0.097 |
0.080 |
14 |
| Total Sulphide |
|
36.7 |
0.46 |
4.77 |
0.109 |
0.090 |
13 |
Note: *1 Cutoffs >0.1%Co or >0.5%cu or >3.0%Pb
