Northern Peru Copper Corp.
TSX : NOC

Northern Peru Copper Corp.

September 11, 2007 13:17 ET

Northern Peru Intercepts 40m @ 3.09 Grams/Tonne Gold at Hilorico

VANCOUVER, BRITISH COLUMBIA--(Marketwire - Sept. 11, 2007) - Northern Peru Copper Corp. (TSX:NOC) is pleased to announce that it has drilled the highest grade gold mineralization to date at the Hilorico gold deposit located in the Yanacocha district of northern Peru. Hole HR-07-31 intercepted 40 meters grading 3.09 grams/tonne Au from 178 to 218 meters within a wider intercept of 122.6 meters grading 1.57 grams/tonne gold from 111.4 to 234m in brecciated quartzites with a sulfide matrix. The hole is a step out hole to depth on the southern margin of the deposit and the interval is open in this direction.

Marshall Koval, President & CEO, said: "The grade and thickness of this intercept is significantly higher than that previously encountered at Hilorico and justifies the Company focusing additional exploration on the sulfide part of the Hilorico deposit. A new drill program has been initiated at Hilorico to evaluate the potential extensions of this higher grade intersection."

Hilorico is located in northern Peru approximately one kilometre from the Company's large, feasibility stage Galeno copper-gold-molybdenum-silver project and 16km from Yanacocha, South America's largest gold mine.

To date, the Company has drilled 10,478 meters in 32 holes at Hilorico, including one drilled by a previous operator. The table below shows the new results as well as the results of four other recently drilled holes.



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Hole No. From To Interval Au Ag Comments
(meters) (meters) (meters) (g/t) (g/t)
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HR-06-27 134 138 4 0.99 7.7 4.46% Zn
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HR-06-28 10 120 110 0.62 1.3 Oxide
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and 268 273 5 0.61 11.3 4.30% Zn
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HR-06-29 17.8 24.6 6.8 9.99 6.9 Oxide,
includes
26.5 g/t
Au / 2m
----------------------------------------------------------------------------
and 120 129.3 9.3 0.86 1.8 Oxide
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and 166 220 66 1.62 5.5 Sulphide
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and 242 260 18 1.17 2.4 Sulphide
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HR-06-30 30.7 90.3 59.6 2.02 47.0 Oxide,
includes
41.2 g/t
Au / 2m
----------------------------------------------------------------------------
and 242.3 298 55.7 0.31 32.2 Sulphide
----------------------------------------------------------------------------
and 340 344 4 0.35 3.2 6.35% Zn,
1.8% Pb
----------------------------------------------------------------------------
HR-07-31 111.4 234 122.6 1.57 13.6 Sulphide
----------------------------------------------------------------------------
including 178 218 40 3.09 7.9 Sulphide
----------------------------------------------------------------------------
- All sample intervals contain samples no shorter than 0.6 meters and no
longer than 2.40m.
- For intervals noted as being Oxide a 0.3g/t Au cut off grade was used and
for Sulphide intervals a cut off grade of 0.5g/t Au was applied.
Internal dilution does not exceed 37% in any interval and it has been
noted where individual samples returned more than 10g/t Au.
- For intervals where zinc is quoted a 3% zinc cut off was used and there is
no internal dilution.
- Insufficient information is available to calculate true width of
intercepts.


The current NI 43-101 mineral resource estimate completed in January 2007 and based on assay results from 8,656 meters of drilling in 27 diamond drill holes estimated an inferred oxide resource of 19.4 million tonnes grading 0.65 grams per tonne gold and 3.3 grams per tonne silver at a cut off grade of 0.30 grams per tonne gold (407,000 ounces gold; 2.1 million ounces silver). In addition an inferred sulphide resource of 21.3 million tonnes grading 0.93 grams per tonne gold and 4.8 grams per tonne silver was estimated using a cut off grade of 0.50 grams per tonne gold (641,000 ounces gold; 3.3 million ounces silver). The different cut-off grades used for oxide and sulphide gold mineralization reflect the different potential operating costs of processing these ore types.

The resource estimate is classified as an Inferred Mineral Resource, consistent with the CIMM definitions referred to in National Instrument 43-101 (NI 43-101). Robert Sim, P.Geo., from Norwest Corporation and a Qualified Person as defined by NI 43-101, is responsible for the mineral resource estimate.

Marshall Koval, P.Geo, is the Qualified Person as defined by National Instrument 43-101 for the Galeno Project. Jeff O'Toole, a geologist with over 25 years of experience is supervising the quality control and quality assurance program on site. Logging and sampling are completed in Northern Peru's secure facility located at the project. The drill cores are mechanically split on site and samples are transported to the ALS Chemex facility in Lima for sample preparation and analysis. Northern Peru inserts standards, blanks and duplicates selected on a random basis into the sample stream and sends 5% of the sample pulps to check laboratories in Vancouver.

NORTHERN PERU COPPER CORP

Marshall Koval, CEO & President

CAUTION REGARDING FORWARD LOOKING STATEMENTS:

Safe Harbor Statement under the United States Private Securities Litigation Reform Act of 1995: Except for the statements of historical fact contained herein, the information presented constitutes "forward-looking statements" within the meaning of the Private Securities Act of 1995. Such forward-looking statements, including but not limited to those with respect to the price of copper, gold and molybdenum, the timing and amount of future production, metallurgical recoveries, costs of production, reserve and resource determination and reserve conversion rates, involve known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievement of the Company to be materially different from any future results, performance or achievements expressed or implied by such forward-looking statements. Such factors include, among others, risks relating to the integration of acquisitions, risk relating to international operations, risks relating to joint-venture operations, the actual results of current exploration activities, conclusions of economic evaluations, changes in project and exploration parameters as plans continue to be refined, future prices of copper, gold and molybdenum, as well as those factors discussed in the section entitled "Risk Factors" in the Form 20-F as on file with the Securities and Exchange Commission in Washington, D.C. Although the Company has attempted to identify important factors that could cause actual results to differ materially, there may be other factors that cause results not to be as anticipated, estimated or intended. There can be no assurance that such statements will prove to be accurate as actual results and future events could differ materially from those anticipated in such statements. Accordingly, readers should not place undue reliance on forward-looking statements.

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