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Región de Aisén de Carlo Ibánez del Campo » Mina El Toqui » Zinc en Polvo
Martes 23 de Octubre del año 2007 » 23:15 Horas.
Breakwater has four producing zinc mines...
and the El Toqui mine in Chile. Breakwater is listed on the TSX under........

Breakwater is a mineral resource company engaged in the acquisition, exploration, development and mining of base metal and precious metal deposits in the Americas. Breakwater has four producing zinc mines: the Myra Falls mine in British Columbia, Canada; the Langlois mine in north western Quebec, Canada; the El Mochito mine in Honduras; and the El Toqui mine in Chile. Breakwater is listed on the TSX under the ticker BWR.

The El Toqui mine is located in Chile s Region XI, approximately 1,350 kilometres south of Santiago and 120 kilometres northeast of Coyhaique
(view map).

The El Toqui deposit was discovered in the early 1970s. Metallgesellschaft AG owned the property for a number of years and then sold it to a Chilean entrepreneur.

The property was subsequently purchased by Lac Minerals. In 1994, Barrick Gold Corporation acquired Lac Minerals which included El Toqui. Breakwater purchased El Toqui in August 1997.

The El Toqui property includes the Doña Rosa zinc/gold mine and the San Antonio and Mallin-Monica zinc/lead mines, the Estatuas mine and the Concordia deposit. Processing is carried out through a 1,500 tonne per day concentrating plant.

Zinc/gold mineralization at El Toqui occurs as manto deposits hosted by an 8 metre to 12 metre thick bed of fossiliferous limestone, known as the Main Manto unit. The El Toqui deposits all dip gently to the south, and are amenable to room and pillar mining, with 11 metre rooms around 8 metre pillars. The Doña Rosa Mine is accessed via an adit.

Summary of Mineral Reserves and Resources

31 March, 2007 31 December, 2006
Tonnes
(000s)
Zn
(%)
Au
(g/t)
Tonnes
(000s)
Zn
(%)
Au
(g/t)
Proven and Probable Reserves 4,302.9 7.3 1.1 2,869 8.2 1.3
Measured and Indicated Resources 4,938.4 8.0 1.2 3,597 8.9 1.3
Inferred Resources 4,437.1 7.5 0.4 4,626 8.5 0.5
Measured and Indicated Resources include Proven and Probable Reserves.

The concentrator utilizes conventional crushing and grinding and differential flotation including rougher and cleaner flotation circuits which produce gold and zinc concentrates. The concentrates are separately thickened and filtered on vacuum and pressure filters. The concentrates are trucked to Puerto Chacabucco where they are loaded onto ships for transport to smelters around the world.

First Six Months 2007 2006 2005 2004 2003
Ore Milled (Tonnes)
Zinc (%)
Gold (g/t)
258,470
6.5
3.0
539,803
6.5
2.4
519,963
6.0
2.9
466,953
6.4
2.3
440,301
8.1
0.3
Concentrate Production
Zinc (tonnes)
    Recovery (%)
    Grade (%)
Gold (tonnes)
    Recovery (%)
    Grade (g/t)

30,798
90.0
49.3
2,810
59.4
145.6

63,617
91.0
49.9
4,237
68.5
192.1

56,552
90.4
50.1
4,110
51.4
221.7

53,804
91.0
50.5
5,009
57.2
122.0

64,107
92.5
51.2
2,575
31.8
17.7
Metal in Concentrates
Zinc (tonnes)
Gold (ounces)
Silver (ounces)

15,191
49,472
20,423

31,725
36,795
71,703

28,347
41,605
131,020

27,190
27,865
231,872

32,848
2,534
225,695
Total Cash Costs
Per lb payable zinc sold (US$)

0.77

0.63

0.44

0.28

0.36


http://www.breakwater.ca/operations/toqui.cfm