Scorpio Mining to Advance Feasibility Study of an Additional Plant and Plans to Increase its Existing Nuestra Se�ora Plant Capacity in the Cosal� District
Note: Metal prices used in the above estimate are US$12/oz silver, US$2.00/lb copper and US$750 /oz gold. A 100 g/t silver equivalent cutoff was applied. The NI 43-101 technical report to support this estimate was filed on SEDAR Dec. 4, 2009. Mineral resources that are not reserves do not have demonstrated economic viability.
Some components of the feasibility study are actively being advanced; including, an 8,000-metre surface drilling program currently under tender that will cover infill, extension and sterilization drilling of the San Rafael and La Verde mineralization. One of the key objectives of this study will be to upgrade mineral resources within the San Rafael, La Verde and El Caj�n deposits to NI 43-101 compliant mineral reserves. It is anticipated that the feasibility study will be completed by Q3 2012.
The Corporation's internal strategic evaluation also concluded that notwithstanding the feasibility study for the addition of a second plant, the existing Nuestra Se�ora processing facility should be expanded by 50%, taking production from 1,500 tpd to 2,250 tpd. The ore for the expanded plant would be sourced from the Nuestra Se�ora mine and supplemented with high-grade material from the Candelaria deposit and the La Verde mine. The completion schedule of this expansion will depend upon the sourcing of major processing components, but is expected to be completed before second half of 2012.
This expansion does not preclude additional expansion of the Nuestra Se�ora processing facility in the future. This will be determined pending the results of the feasibility study on the proposed new plant as well as continued exploration success in the Cosal� district. The Corporation has the advantage of multiple options from which to select the best cost-benefit growth scenario.
The La Verde mine, located approximately 20 km by road from the Nuestra Se�ora processing plant, is currently being refurbished and small quantities of high-grade ore are being metallurgically tested through the plant.
The Candelaria underground deposit is situated above the Nuestra Se�ora mineralization and is connected to the Nuestra Se�ora mine via an existing haulage ramp. The Corporation is currently developing two levels at Candelaria to assess the viability of mechanized mining techniques. The high-grade nature of the deposit was verified in 2004-2005, where results from 53 underground drill holes returned >300 g/t silver and >1,000 g/t silver in 56% and 22% of sampled intersections respectively (average sampled core length was 2.2 m). The mineralization is variably enriched in other metals, returning best assays of 7.69% copper, 23.51% zinc, 15.21% lead and 13.55 g/t gold. Candelaria exhibits the typical pinch and swell nature of carbonate replacement deposits and exhibits high variation in widths and grades of mineralization over short distances (Reference: News releases dated October 7, 2004 to May 12, 2005).
Scorpio Mining's Mexico Country Manager, John A. Sadek, B.Eng. (Mining), MAusIMM, is a Qualified Person for the Corporation's Mexico projects and has reviewed the content of this section of the release.