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DIA BRAS - BOLIVAR ZN-CU-AG-AU PROJECT RESULTS FROM THE MINE, THE MILL AND THE DRILLING
Montréal, Québec, - January 26, 2005 -
Dia Bras Exploration Inc. (DIB-V) (Dia Bras or the "Company") announces the latest results from their operation at the Bolivar project, northern Mexico. The mine has started to operate in late December and 1000 tons of development ore were shipped to the mill that begun its operation earlier this week.
Mine
The company started a pre-feasibility study in December 2004 in order to confirm tonnage, grade and recovery as well as assess mining/milling related costs at the former Zn-Cu-Ag-Au Bolivar Mine.
T
he necessary mining equipment was bought in order to access and mine high grade ore on two different levels. Levels 1 and 6, fifty meters apart, were widened to permit mining with modern equipment of two high-grade Zn-Cu mineralized zones ranging from 2 to 15 meters wide. Already more than 300 meters of rehabilitation or new drift have been completed producing more than 1000 tons of development ore averaging 15% Zn and 3% Cu. The company plans to ship to the mill approximately 2200 tons of similar grade material in February. Starting in March, when more working faces on the Zn-Cu rich zones will be available, tonnage will improve to 3000 tons per month and grade to 25% Zn and 6% Cu with Ag and Au credit.
Mill
Dia Bras signed in November a three-year lease-purchase agreement on a 100 tpd flotation mill and invested 200 000 US$ to rehabilitate and upgrade the milling facility. The mill is located in Malpaso near Chihuahua, 125 km from the mine. Transport from the mine to the mill is by trucks and train. To transport and manipulate the ore, the company acquired a fleet of 9 dump trucks and 3 front-end loaders.
Starting in March, the Malpaso mill of Dia Bras will produce approximately 800 tons of Zn concentrates and 500 tons of Cu concentrates per month. The company is negociating presently with Mexican and international smelters interested to buy the concentrates.
Drilling
A total of 16,460 meters of drilling representing 102 holes was completed in 2004 on the Bolivar project. The holes DIA-045-04 to DIA-102-04 were drilled to test the potential high grades Zn-Cu mineralized zones easily accessible by the existing mine workings. Complete results up to hole DIA-100-04 are presented in the table below.
As part of the pre-feasibility study, an additional 20,000 meters of systematical drilling will be completed in 2005 on the Bolivar project.
|
|
|
|
Au |
Ag |
Cu |
Zn |
| DIA-045-04 * | 62.00 |
63.00 |
1.00 |
0.10 |
10.00 |
0.47 |
10.95 |
67.00 |
72.00 |
5.00 |
0.08 |
55.00 |
6.31 |
37.23 |
|
DIA-046-04 * |
78.80 |
80.00 |
1.20 |
0.165 |
65.80 |
8.07 |
38.15 |
DIA-047-04 * |
39.00 |
57.00 |
18.00 |
- |
11.00 |
0.33 |
2.89 |
DIA-048-04 * |
29.00 |
30.00 |
1.00 |
8.70 |
116.00 |
2.18 |
11.80 |
DIA-049-04 |
39.00 |
44.00 |
5.00 |
- |
2.40 |
0.085 |
1.15 |
47.00 |
53.00 |
6.00 |
- |
7.00 |
0.50 |
3.43 |
|
67.00 |
69.00 |
2.00 |
- |
9.75 |
1.33 |
0.018 |
|
DIA-051-04 * |
145.00 |
150.00 |
5.00 |
- |
15.94 |
0.75 |
3.76 |
DIA-052-04 * |
59.83 |
64.00 |
4.17 |
0.46 |
228.08 |
6.68 |
19.19 |
67.00 |
75.00 |
8.00 |
- |
41.95 |
5.36 |
3.29 |
|
80.00 |
83.00 |
3.00 |
- |
38.20 |
1.62 |
7.72 |
|
DIA-054-04 * |
57.00 |
70.00 |
13.00 |
- |
34.65 |
3.49 |
8.60 |
77.00 |
79.00 |
2.00 |
0.88 |
181.55 |
4.02 |
12.93 |
|
129.40 |
130.35 |
0.95 |
- |
157.00 |
0.36 |
4.95 |
|
DIA-055-04 * |
62.00 |
67.00 |
5.00 |
- |
17.42 |
2.04 |
13.54 |
69.00 |
72.00 |
3.00 |
- |
104.60 |
5.28 |
7.75 |
|
DIA-058-04 * |
148.45 |
149.86 |
1.41 |
0.14 |
66.20 |
8.78 |
33.52 |
156.82 |
158.82 |
2.00 |
- |
57.55 |
4.865 |
30.04 |
|
DIA-060-04 * |
52.00 |
53.00 |
1.00 |
0.165 |
59.70 |
10.25 |
35.45 |
DIA-061-04 * |
97.00 |
105.00 |
8.00 |
3.55 |
281.43 |
4.04 |
0.87 |
168.80 |
169.80 |
1.00 |
0.058 |
30.30 |
7.16 |
21.90 |
|
DIA-064-04 * |
67.00 |
68.00 |
1.00 |
0.776 |
211.00 |
3.96 |
33.89 |
DIA-065-04 * |
189.00 |
190.00 |
1.00 |
0.012 |
12.80 |
3.17 |
0.806 |
DIA-066-04 * |
32.00 |
33.00 |
1.00 |
2.13 |
140.00 |
1.42 |
0.011 |
43.00 |
44.00 |
1.00 |
1.055 |
126.00 |
0.67 |
0.40 |
|
DIA-067-04 * |
210.00 |
211.00 |
1.00 |
4.65 |
112.00 |
4.49 |
16.50 |
DIA-068-04 |
1.00 |
2.00 |
1.00 |
1.06 |
47.10 |
0.539 |
4.16 |
DIA-070-04 |
115.00 |
116.00 |
1.00 |
3.28 |
356.00 |
6.48 |
0.038 |
DIA-071-04 * |
38.00 |
40.00 |
2.00 |
0.153 |
55.35 |
8.32 |
3.06 |
60.00 |
62.00 |
2.00 |
0.043 |
19.40 |
3.70 |
21.25 |
|
68.00 |
69.00 |
1.00 |
0.431 |
231.00 |
3.41 |
8.50 |
|
81.00 |
84.00 |
3.00 |
0.070 |
28.03 |
4.32 |
18.8 |
|
87.00 |
88.00 |
1.00 |
0.866 |
245.00 |
3.22 |
10.35 |
|
93.00 |
96.00 |
3.00 |
0.447 |
84.80 |
2.40 |
18.10 |
|
DIA-072-04 * |
36.00 |
38.00 |
2.00 |
0.583 |
126.00 |
1.645 |
2.48 |
43.00 |
44.00 |
1.00 |
1.805 |
115.00 |
1.43 |
0.027 |
|
133.55 |
136.45 |
2.90 |
0.592 |
124.83 |
7.26 |
38.80 |
|
DIA-074-04 |
43.00 |
44.00 |
1.00 |
0.067 |
74.30 |
5.32 |
23.60 |
97.40 |
98.00 |
0.60 |
0.084 |
58.70 |
6.33 |
4.67 |
|
DIA-078-04 * |
49.00 |
50.00 |
1.00 |
- |
35.50 |
3.03 |
0.533 |
52.37 |
54.95 |
2.58 |
- |
35.70 |
3.725 |
17.78 |
|
59.60 |
60.40 |
0.80 |
- |
115.00 |
3.920 |
4.64 |
|
70.20 |
71.25 |
1.05 |
0.374 |
190.00 |
3.460 |
12.25 |
|
DIA-079-04 |
13.16 |
16.00 |
2.84 |
- |
6.03 |
0.191 |
17.63 |
DIA-083-04 |
18.20 |
18.80 |
0.60 |
− |
19.10 |
3.04 |
1.44 |
19.40 |
21.00 |
1.60 |
0.08 |
44.3 |
5.90 |
0.843 |
|
22.00 |
23.00 |
1.00 |
0.086 |
35.70 |
4.53 |
2.95 |
|
28.00 |
31.00 |
3.00 |
− |
19.83 |
2.13 |
7.82 |
|
DIA-085-04 |
22.00 |
23.00 |
1.00 |
0.066 |
65.10 |
5.62 |
2.50 |
|
91.00 |
92.00 |
1.00 |
1.12 |
50.60 |
6.83 |
0.005 |
DIA-086-04 |
6.50 |
8.50 |
2.00 |
0.179 |
39.60 |
0.765 |
13.10 |
44.00 |
45.00 |
1.00 |
0.302 |
54.00 |
1.28 |
21.20 |
|
51.00 |
53.00 |
2.00 |
0.184 |
42.30 |
0.508 |
5.37 |
|
73.00 |
74.00 |
1.00 |
0.023 |
9.00 |
0.929 |
13.80 |
|
DIA-087-04 * |
39.00 |
46.00 |
7.00 |
− |
70.45 |
4.67 |
28.52 |
DIA-089-04 |
43.00 |
47.00 |
4.00 |
0.0625 |
79.675 |
1.31 |
10.467 |
DIA-090-04 |
49.00 |
53.00 |
4.00 |
0.140 |
43.10 |
1.373 |
15.84 |
DIA-091-04 |
31.00 |
33.00 |
2.00 |
0.044 |
34.45 |
2.68 |
4.58 |
34.00 |
36.00 |
2.00 |
0.029 |
20.65 |
2.28 |
7.05 |
|
39.00 |
43.00 |
4.00 |
0.048 |
45.325 |
4.88 |
12.242 |
|
48.00 |
52.00 |
4.00 |
0.163 |
104.9 |
3.102 |
10.27 |
|
DIA-095-04 |
38.00 |
39.00 |
1.00 |
0.019 |
3.50 |
0.21 |
8.26 |
49.00 |
50.00 |
1.00 |
0.03 |
44.00 |
1.52 |
5.29 |
|
53.00 |
54.00 |
1.00 |
0.067 |
99.60 |
9.49 |
1.66 |
|
DIA-096-04 |
6.00 |
7.00 |
1.00 |
− |
37.80 |
1.97 |
0.957 |
62.00 |
64.00 |
2.00 |
− |
14.35 |
1.095 |
8.315 |
|
77.00 |
78.00 |
1.00 |
0.122 |
66.70 |
0.064 |
0.066 |
|
83.00 |
84.00 |
1.00 |
− |
29.00 |
1.04 |
6.03 |
|
86.00 |
88.00 |
2.00 |
0.142 |
54.95 |
1.415 |
10.565 |
|
121.00 |
122.00 |
1.00 |
0.83 |
41.00 |
1.00 |
0.008 |
|
123.00 |
124.00 |
1.00 |
0.494 |
19.40 |
0.96 |
0.016 |
|
148.00 |
149.00 |
1.00 |
0.706 |
34.80 |
0.84 |
0.012 |
|
DIA-097-04
|
47.00 |
49.00 |
2.00 |
− |
42.45 |
1.93 |
2.14 |
52.00 |
53.00 |
1.00 |
− |
72.80 |
1.92 |
13.25 |
|
60.00 |
61.00 |
1.00 |
0.12 |
25.00 |
3.14 |
2.87 |
|
62.00 |
63.00 |
1.00 |
0.092 |
54.00 |
3.51 |
8.03 |
|
DIA-098-04 |
140.00 |
142.00 |
2.00 |
0.579 |
92.10 |
1.905 |
7.825 |
216.00 |
217.00 |
1.00 |
0.119 |
39.30 |
4.75 |
34.70 |
|
217.00 |
218.00 |
1.00 |
− |
21.30 |
1.76 |
9.98 |
|
DIA-100-04 |
35.00 |
36.00 |
1.00 |
− |
5.70 |
− |
8.03 |
About Dia Bras
Dia Bras is a Canadian mining exploration company focused on precious and base metals in the State of Chihuahua, Mexico. The Company will continue exploration and the active development of its two key projects – Bolivar and Promontorio – located in the Sierra Madre precious metal belt. The Company is traded on TSX Venture Exchange, under the symbol “DIB”.
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For further information contact:
Réjean Gosselin
President
The TSX Venture Exchange does not accept responsibility for the adequacy or accuracy of this press release.