Northern Peru Copper Corp.
TSX : NOC

Northern Peru Copper Corp.

May 16, 2006 08:30 ET

Northern Peru Announces Excellent Metallurgical Testing Results for Galeno

VANCOUVER, BRITISH COLUMBIA--(CCNMatthews - May 16, 2006) - Northern Peru Copper Corp. (TSX:NOC) is pleased to announce that it has received excellent results from the metallurgical testing program completed as part of the Galeno Project prefeasibility study. The test results show that the Galeno ore material is amenable to conventional flotation recovery methods and that the overall metal recoveries are high. The following table shows the metal recoveries and the amount of metal recovered into concentrate:



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% %
Indic- Inferr- Metal in Concentrate % Metal Recovery
ated ed -------------------- ----------------------
Resour- Resour- Au Ag
Ore Type ces ces Cu% g/t Mo% g/t Cu% Au% Mo% Ag%
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SST - Pr 31% 49% 27.6 8.1 0.4 77.1 90.5 67.0 28.3 77.1
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POR - Ss 20% 9% 37.2 1.8 1.0 86.6 88.5 48.7 87.2 86.6
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SST - Ss 33% 16% 32.7 1.4 0.2 79.2 89.8 46.1 43.5 79.2
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Por - Pr 16% 9% 30.4 2.7 0.2 74.6 92.9 45.0 52.7 74.6
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Qzt - Pr - 17% 28.8 1.1 0.3 78.6 89.1 15.0 62.6 78.6
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Weighted Avg. %
(Indicated Resources) 31.6 3.8 0.4 79.3 90.3 52.9 49.0 79.3
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Weighted Avg. %
(Inferred Resources) 29.7 4.8 0.4 78.3 90.2 51.2 44.1 78.3
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SST - Santa Sandstones (Pr - Primary, Ss - Secondary Sulphides)
POR - Porphyry (Pr - Primary, Ss - Secondary Sulphides)
Qzt - Chimu Quartzites (Pr - Primary)


Marshall Koval, President and CEO, said, "The positive metallurgical testing program shows that standard reagents and flotation methods can be used at Galeno to produce a high quality saleable concentrate. The test work also shows that the ore material can be easily milled leading to lower power consumption requirements and operating costs. The results of the program also correlate well with earlier testing by North Limited and form a solid foundation for our prefeasibility study."

The metallurgical test work was carried out by C.H. Plenge & Cia in Lima, Peru under the supervision of the Minerals Engineering Company. The program was designed to determine the crushing, grinding and flotation characteristics of the five different primary and secondary sulphide ore types found at Galeno which are representative of the current Galeno NI 43-101 compliant resource estimate. Check assays were completed by SGS Lakefield and ACME Laboratories. The test data will be used by Samuel Engineering to develop a process flowsheet, to identify further testing requirements, and to develop capital and operating costs for the prefeasibility study which is scheduled to be completed during the second half of 2006.

The drilling program at Galeno remains ongoing and is focused on infill drilling to bring the inferred resources into the indicated category. The company intends to complete the infill drilling program by the end of May and update the NI 43-101 resource estimate in July. In addition, the Company continues to evaluate and drill the adjacent Hilorico gold zone.

Mr. Marshall Koval, P.Geo., the Qualified Person as defined by NI 43-101 for the Galeno project, has reviewed and approved the content of this press release.

NORTHERN PERU COPPER CORP.

Marshall Koval, CEO & President

CAUTION REGARDING FORWARD-LOOKING STATEMENTS: This release includes certain statements that may be deemed "forward-looking statements". All statements in this release, other than statements of historical facts that address future production or resource potential, exploration drilling, exploitation activities and events or developments that Northern Peru expects to occur, are forward-looking statements. Although the company believes the expectations expressed in such forward-looking statements are based on reasonable assumptions, such statements are not guarantees of future performance and actual results or developments may differ materially from those in the forward-looking statements. Factors that could cause actual results to differ materially from those in forward-looking statements include fluctuations in commodity prices, exploration successes, and continued availability of capital and financing and general economic, market or business conditions. Investors are cautioned that any such statements are not guarantees of future performance and actual results or developments may differ materially from those projected in the forward-looking statements. The Company does not assume any obligation to update or revise its forward-looking statements, whether as a result of new information, future events or otherwise.

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