TORONTO, Nov. 4 /CNW/ -
NWM Mining Corporation (the "Company" TSX-V: NWM) is pleased to announce results received from the use of Selective Mining at the Lluvia de Oro mine. Selective Mining focuses on the elimination of waste by utilizing closely spaced blast hole drilling with smaller, more flexible mining equipment.
Sampling of heaps revealed that unnecessary dilution of ore occurred during mining at Lluvia de Oro in the period from 1995-98. With the commencement of mining in August, 2010, closely spaced blast hole patterns have been used in both ore and waste zones. The assay results from this close spaced drilling have not only identified internal waste which can be discarded, but have also outlined small stringers of ore grade material which were not detected by the wider spaced drilling used for reserve definition and for calculation of the NI 43-101 compliant reserve report. With the ability to selectively mine zones as small as 11.25 cubic meters, the material that is now moved to the leach pads will include significantly less waste material (less dilution).
Selective Mining results in higher gold grades being delivered to the heap. Due to the detection of stringer gold zones in material previously considered waste, Selective Mining has also resulted in more gold ounces defined by blast holes than indicated in the ore reserve block model. Results from the first seven bench blasts are shown in the table below.
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ACTUAL Mining Results vs. RESERVE Block Model Data
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ACTUAL MODEL DIFFERENCE
BENCH TONNES g/t Au Oz. Au TONNES g/t Au Oz. Au Oz. %
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897.5 6,858 0.63 138.47 5,462 0.270 47.41 91.05 192.04
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900 N 705 0.43 9.63 390 0.470 5.89 3.74 63.46
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902.5 N 11,882 0.71 272.37 12,777 0.320 131.45 140.92 107.20
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902.5 S 6,978 0.31 70.00 6,357 0.348 71.12 -1.13 -1.59
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905 7,530 0.34 82.31 5,653 0.358 65.06 17.25 26.51
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907.5 1,790 1.14 65.61 1,200 0.240 9.26 56.35 608.54
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917.5 1,372 0.28 12.48 2,614 0.306 25.72 -13.23 -51.46
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TOTAL 37,115 0.55 650.87 34,453 0.321 355.92 294.94 82.87
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Note: % Difference Values Total to 82.9%
Blast-hole samples are collected at the drill site while the drilling is being conducted. The drilled material is riffle-split at the site with half of the sample submitted to Laboratorio Tecnologico De Metalurgia LTM SA DE CV in Hermosillo, Sonora, for preparation and analysis by fire assay. Upon receipt of the analyses, the data is entered into Mintec Inc.'s Mine Sight software program which calculates the block grades.
Laboratory gold standards, blanks and 10% duplicate samples are analyzed concurrently with blast hole drill samples to ensure acceptable quality control and quality assurance.
Mr. Rodney A. Blakestad, C.P.G. is a designated Qualified Person pursuant to National Instrument 43-101 of the Canadian Securities Administrators for this press release and has reviewed and approved the technical and scientific disclosure contained herein.
CAUTIONARY STATEMENT ON FORWARD-LOOKING INFORMATION
This news release includes "forward-looking information"; as such term is defined in applicable securities laws. The forward-looking information includes, without limitation, the success of exploration activities and other similar statements concerning anticipated future events, conditions or results that are not historical facts. These statements reflect management's current estimates, beliefs, intentions and expectations; they are not guarantees of future performance. The Company cautions that all forward looking information is inherently uncertain and that actual performance may be affected by a number of material factors, many of which are beyond the Company's control. Such factors include, among others, risks and uncertainties relating to exploration and development; the ability of the Company to obtain additional financing; the need to comply with environmental and governmental regulations; political and economic instability and general civil unrest in Mexico, if any; potential defects in title to the Company's properties; fluctuations in currency exchange rates; fluctuating prices of commodities; operating hazards and risks; competition; and other risks and uncertainties, including those described in the Company's other regulatory filings filed with the Canadian Securities Administrators and available at www.sedar.com. Accordingly, actual future events, conditions and results may differ materially from the estimates, beliefs, intentions and expectations expressed or implied in the forward-looking information. All statements are made as of the date of this news release and the Company is under no obligation to update or alter any forward-looking information.
Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy of this release.
For further information:
NWM Mining Corporation
(416) 364-6799
www.nwmcorp.ca
