Millrock Resources Inc.
TSX VENTURE : MRO

Millrock Resources Inc.

May 20, 2008 10:16 ET

Millrock Announces Claim Staking of the Galiuro Porphyry Prospect in the San Manuel Copper District, Arizona

VANCOUVER, BRITISH COLUMBIA--(Marketwire - May 20, 2008) - Millrock Resources Inc. (TSX VENTURE:MRO), is pleased to announce that it has completed staking of claims on highly prospective lands in the San Manuel - Copper Creek area of southeastern Arizona. The Company sees strong potential for a large copper-molybdenum porphyry deposit beneath volcanic cover at the Galiuro project, which is located 16 kilometers east of Mammoth, and 80 kilometers northeast of Tucson, Arizona.

Millrock's Galiuro property is located 80 kilometers southeast of the Resolution deposit, which is currently being drilled by Resolution Copper Mining, a joint effort of Rio Tinto and BHP Billiton. Resolution is reported to be one of the world's largest and highest grade un-mined copper deposits. The deposit is being evaluated as a large underground block cave mining operation. Millrock's Galiuro property is within the San Manuel - Copper Creek Trend, a linear feature upon which a series of highly productive porphyry deposits is located. The San Manuel - Kalamazoo deposit is a one billion ton copper porphyry located just 20 kilometers to the southwest. San Manuel produced 60,000 tons per day in the 1990's from an underground block cave mining operation. For a location map Millrock's Galiuro property click here: http://millrockresources.com/images/projects/Web_Galiuro_v01_large.gif

The Company is targeting a high-grade copper porphyry deposit within the intrusive rocks beneath post-mineralization Tertiary volcanic rock. The Millrock claim block is centered on a buried Laramide-aged intrusive complex, with excellent porphyry indicators on both the east and west sides of the property. Porphyry-style alteration and mineralized outcrops occur on the immediate west side of the claim block at Copper Creek, and trend beneath cover on to Millrock's claims. A small resource of 110 million tons of porphyry style mineralization is reported at Copper Creek. Breccia pipes in the Copper Creek area are known to contain high grade copper. Red Hawk Resources is actively exploring in the area. This company has recently reported a drill intersection of 27 meters grading 3.42% copper. Just to the east of the claims, a very large argillic alteration zone with intense pyritization occurs at Four Mile Creek. Millrock interprets this alteration to be peripheral to a major porphyry system. Magnetic surveys indicate continuity of the favorable-aged intrusive complex beneath Tertiary-aged volcanic cover on Millrock's claims. Epithermal copper mineralization on the Company's Galiuro claims occurs along major structures in Tertiary volcanic rocks. This mineralization may be remobilized, and suggests the presence of older Laramide-aged porphyry mineralization at depth. While a large porphyry is Millrock's primary target, the possibility of a high grade deposit will be investigated.

Millrock President, Gregory Beischer, noted: "Millrock has now secured 100% ownership of three properties in the heart of the prolific copper mining camps in southeastern Arizona. Each one has strong indications of the presence of a porphyry copper - molybdenum deposit. Millrock will advance these projects in a systematic manner beginning in fall 2008."

The geologic concept for this target was brought to Millrock's attention by Tucson, Arizona based geologist Michael Schaeffer. A Finder's Fee of US$20,000 and issuance of 20,000 Millrock shares is payable to Mr. Schaefer. A further US$10,000 and 15,000 shares is payable annually as long as the Company holds the property, and a payment of US$2 million is to be paid upon commercial production.

This press release has been prepared by Gregory Beischer, Certified Professional Geologist, President and CEO of Millrock Resources Inc. Mr. Beischer is a Qualified Person as defined by NI 43-101. Mr. Beischer approved the information contained in this release.

About Millrock Resources Inc.

Millrock Resources Inc. is a TSX Venture Exchange listed company intent upon the discovery of high value mineral deposits, with a focus on Alaska and Arizona. Millrock currently has five active exploration projects in Alaska, and three in Arizona. The Company plans to drill at two of its projects in Alaska in summer of 2008.

ON BEHALF OF THE BOARD

Gregory Beischer, President & CEO

Some statements in this news release contain forward-looking information, including without limitation statements as to planned expenditures and exploration programs. These statements address future events and conditions and, as such, involve known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements to be materially different from any future results, performance or achievements expressed or implied by the statements. Such factors include without limitation the completion of planned expenditures, the ability to complete exploration programs on schedule and the success of exploration programs.

The TSX Venture Exchange does not accept responsibility for the adequacy or accuracy of this release.

Contact Information

  • Millrock Resources Inc.
    Patrick De Witt
    Manager, Investor Relations
    (604) 638-3164
    (604) 688-9620 (FAX)
    Website: www.millrockresources.com