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Coastal Pacific - Additional Results From Preliminary Sampling Program on Santa Rita Property


June 9, 2011 - CALGARY, AB

Coastal Pacific Mining Corp. (OTCQB: CPMCF) (PINKSHEETS: CPMCF) ("Coastal Pacific" or the "Company"), www.coastalpacificminingcorp.com, wishes to announce further details pertaining to the recently completed Phase I Mapping and Sampling program on its Santa Rita property.

The 1,200 hectares (2,965 acres) Santa Rita property is located within the Central Cordillera of the Peruvian Andes in rugged terrain at elevations between 4,200 m (13,780 feet) to 4,800 m (15,748 feet) above sea level. Limited exploration had previously documented both vein and replacement (manto) mineralization, hosted within the limestone-dominated Jumasha Formation which is up to 400 m thick and open and undefined at length. The Jumasha Formation is important in central Peru for its documented mineral potential, including the Antamina deposit, comprising large volume skarn mineralization.

During Coastal Pacific's recent Phase I Mapping and Sampling program, a primary focus was to further investigate and identify silver-lead-zinc mineralization outlined in previous geological reports on the Santa Rita property, particularly work conducted by Zegarra in 1983 and Pigeon in 2009.

Zegarra (1983) identified 6 veins on Humaspunco Mountain trending in an east-west direction, having an average grade of 290.7 g/t Ag, 14.65% Pb and 7.00% Zn and mineralized lengths of up to 300 meters.

Pigeon (2009) reported a mineralized manto horizon with an average grade of 196.3 g/t Ag, 12.75% Pb and 9.03% Zn which "... outcrops over a distance of more than 500 metres" (Pigeon 2009) and approximately 1 m thick. Pigeon reported "veins are composed of barite, galena, sphalerite and quartz with a minor amount of pyrite and iron carbonates. The vein mineralization is characterized by elevated silver, lead and zinc contents that average 290.7 g/t (n=17, s(n-1)=153.6), 14.65% (n=17, s(n-1)=5.69) and 7.00% (n=17, s(n-1)=5.47)" (Pigeon 2009).

Coastal Pacific mapped and sampled many of the previously known silver-lead-zinc mineralized structures within Humaspunco Mountain area. From the Phase I program Coastal identified new and known structures which include a well-developed silver-lead-zinc breccia occurrence, three separate and distinct silver-lead-zinc mineralized manto horizons, and 11 separate silver-lead-zinc mineralized west-striking veins, with three very prominent, large veins exposed just south of the crest of Humaspunco Mountain. Coastal Pacific collected 262 rock samples from mineralized veins, mantos, and breccia unit.

A very distinct and well developed silver-lead-zinc breccia occurrence was identified approximately 300 m east of the easternmost occurrence of the manto horizon previously reported. Ten separate artisanal workings have been developed along the occurrence, exposing a well mineralized silver-lead-zinc breccia having a calcitic matrix up to 3 m thick. Samples collected by Coastal returned results ranging from 4.40 g/t Ag, 0.32% Pb and 0.08% Zn, to as high as 271 g/t Ag, 17.41% Pb and 28.03% Zn.

Coastal identified three separate and distinct silver-lead-zinc mineralized manto horizons, each of which is up to 1.5m thick localized within the uppermost Jumasha Formation. The manto horizon documented in previous reports appears to have been mis-identified and as a result, represents a composite of three separate and distinct manto horizons. The lower manto horizon is interpreted to have potential to underlie the entire eastern half of Humaspunco Mountain (based on the fact that the associated vein mineralization extends to the eastern margin of the mountain).

The silver-lead-zinc manto horizons are exposed along the Collacocha River for approximately 605 m (east-west). The two lower silver-lead-zinc manto horizons are exposed along the base of a prominent set of cliffs in the Jumasha Formation for approximately 785 m (north-northeast - south-southwest). Samples collected by Coastal returned results ranging from 17.0 g/t Ag, 0.32% Pb and 0.09% Zn, to as high as 684 g/t Ag, 38.76% Pb and 28.03% Zn.

Coastal also successfully identified up to 11 separate and distinct silver-lead-zinc veins comprising predominantly west-striking veins, with three very prominent veins exposed just south of the crest of Humaspunco Mountain. The silver-lead-zinc veins are defined by abundant shallow, slumped trenches defining conservative strike lengths of, from north to south, 410 m, 378 m and 282 m. Samples collected by Coastal returned results ranging from 4.40 g/t Ag, 0.48% Pb and 0.08% Zn, to as high as 2668 g/t Ag, 48.70% Pb and 25.32% Zn.

Mineralization of the breccias unit, veins and manto horizons consists predominantly of silver-rich (argentiferous) galena (based on previous analytical results) and sphalerite. Work by Costal identified sulphosalts as an additional mineral phase, possibly a member of the Tetrahedrite -- Tennantite solid solution due to the common association with secondary copper carbonates (malachite and azurite). Gangue minerals include calcite, limonite, iron carbonates and minor to trace pyrite.

There is a dominant north-south hinge fault in the middle of Humaspunco Mountain that bisects the mountain into two parts. To date all of the silver-lead-zinc veins, breccias and mantos have only been identified on the east side of the hinge fault. It is the company's expectation that the recent soil geochemistry survey will provide further information regarding the extent of the veins, breccias and mantos west of the hinge fault. A compilation of the soil geochemical results is still pending and will be released shortly.

The company is very pleased with the results of the Phase 1 program and excited that Coastal Pacific was able to replicate published results from Zegarra (1983) and Pigeon (2009), while also identifying additional mineralized silver-lead-zinc breccias, veins and mantos on the property.

"We are very encouraged and excited by the size and extent of the mineralization previously documented and newly discovered by our recent program. Given the high silver-lead-zinc grades and structural extent on the eastern half of Humaspunco Mountain the potential could be two fold if the silver-lead-zinc zones are found to continue west of the hinge fault. This could be much larger than we had anticipated and what others had been previously focused on," remarked Dave Gibson, VP of Exploration.

A Phase II program is planned to follow-up Phase I results, comprised of a minimum of 4,000 m of diamond drilling to further identify and quantify silver-lead-zinc manto and/or vein style mineralization in the sub-surface of Humaspunco Mountain. The emphasis of the program will be on mineralization documented on the eastern half of the mountain. A significant objective of the proposed program is to acquire information necessary for preparation of an initial NI 43-101 compliant resource estimate for the property.

The technical information of this press release has been reviewed by Rick Walker, B.Sc., M.Sc., P. Geo and Qualified Person as defined by NI 43-101.

Note that no statement in this release is to be construed to imply there are actual or potential mineral reserves currently identified on the Property.

About Coastal Pacific
Coastal Pacific's exploration mandate is to explore, develop and mine gold and/or silver-rich resources in North and South America. To successfully realize this mandate, Coastal Pacific will partner with companies having mineral properties suitable for development and production. Currently the Company has option agreements in place for properties in Ontario, Canada and the Province of Huancavelica, Peru.

Our philosophy is to participate with companies who are in later stages of exploration and ready for development. Gold and silver have been used as currency for over 3,000 years. History has shown that in periods of market downturns gold and silver have proven to be a dependable hedge for investors against both inflation and any monetary crisis.

CAUTIONARY NOTE: Our mineral properties have reports that may use terms which are recognized and permitted under Canadian regulations. We advise U.S. investors that while such terms are recognized and permitted under Canadian regulations, the U.S. Securities and Exchange Commission does not recognize them. The United States Securities and Exchange Commission requires a final or full Feasibility Study to be completed in order to support either Proven or Probable Reserves and does not recognize other classifications of mineralized deposits.

FORWARD-LOOKING STATEMENTS: "Safe Harbor" Statement under the Private Securities Litigation Reform Act of 1995: Statements relating to the company's business activities and other statements in this press release are forward-looking statements within the meaning of the Securities Litigation Reform Act of 1995. Such statements are based on current expectations about the Company's business. Words such as expects, anticipates, intends, plans, believes, estimates and similar words and expressions are intended to identify such forward-looking statements. These statements involve risks that are difficult to evaluate. Actual results can vary from descriptions herein due to many factors including changes in metal prices and business conditions; changes in laws and regulations; problems encountered in exploration and obtaining permits; changes in the competitive environment; technological advances; shortages of skilled workers, drill rigs and equipment; the need for additional capital and other risks listed in the Company's Securities and Exchange Commission filings under "risk factors" and elsewhere. Forward-looking statements speak only as of the date they were made. The Company does not undertake any obligation to update forward-looking statements.

Company Contact
Joseph Bucci
President
927 Drury Ave NE
Calgary, Alberta T2E 0M3
(403) 612-3001
joebucci@coastalpacificminingcorp.com

Investor Relations
Tony Collins
(877) 931-0110
info@coastalpacificminingcorp.com

MarketWire

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