Ascendant Copper fka ACX

[calgarylady]

May 28, 2007

Ascendant Copper Announces Drill Results From Its Chaucha Copper-Moly Project, Ecuador


DENVER, COLORADO--(CCNMatthews - May 28, 2007) - Ascendant Copper Corporation (the "Company"), (TSX:ACX)(TSX:ACX.WT)(BERLIN:A0HMLE)(FRANKFURT:A5C)(WKN:A0HMLE), announced today the results from its first core drilling program on its Chaucha copper-molybdenum property, 75 kilometers southeast of Guayaquil, Ecuador. To date, a 10-hole, 3,174 meter program has been completed in the Naranjos mineralized sector of the project area (see Figure 2) that has preliminarily defined a supergene enrichment zone underlying the Naranjos mineralized sector about 40 meters thick. Copper equivalent values in this enrichment zone exceed 0.50%. In addition the drilling has begun to define what appears to be a large copper porphyry system underlying the Naranjos mineralized sector of the Chaucha concession (see Figure 2).

At the Naranjos mineralized sector three core holes were drilled into a previously inferred copper-molybdenum resource. Hole NA-03 encountered a 112 meters grading 0.54% copper and 0.029% molybdenum. Hole NA-02 reported 104 meters of 0.41% copper and 0.023% molybdenum. Hole NA-01 had 42 meters at the bottom of the hole that averaged 0.40% copper and 0.015% molybdenum. True thickness is estimated to be equal to drilled thickness as the mineralized zone encountered is determined to be flat-lying.

Seven additional core holes (NA-04 through NA-10) were drilled over a horizontal distance of 1,200 meters to the east of the Naranjos mineralized sector. All holes showed copper and molybdenum mineralization. The results are summarized in the table (Figure 1) below.

A nine hole core drilling program has recently been completed on the Gur Gur mineralized sector of the Chaucha property, Assay results have not been received for all the holes completed and results will be made public when all assay results have been received. Drilling will next test soil geochemical anomalies and structural targets west of the main Naranjos mineralized sector in the area called Loma de Tunas.

John R. King, the Company's resident exploration and geological expert as well as a Qualified Person as defined by National Instrument 43-101, Standards of Disclosure for Mineral Projects ("NI43-101"), has reviewed the above statements and assay results. Mr. King confirms that quality controls and correct assay procedures were followed by the Company and these geologic observations of the samples are correct. Assaying of the samples was conducted by ALS Chemex Laboratories, an ISO certified laboratory in Santiago, Chile and Acme Labs, an ISO certified laboratory in Vancouver, British Columbia, Canada.

Nine exploration campaigns have been conducted on the Chaucha property since 1970 by entities like Billiton, Armeno, OMRD, Carlos Puig & Associates SA, among others. Including Ascendant's recent drilling, more than 17,000 meters of drilling have been completed and 132 holes analyzed. The nine campaigners also completed more than 568 meters of underground exploration drifting which was analyzed every two meters and provided bulk samples for metallurgical testing.

Ascendant Copper Corporation is a mineral exploration and development company responsibly advancing its Chaucha and Junin copper-molybdenum projects in Ecuador toward a verifiable economic base metal discovery. Ascendant has a solid asset base, proven management, and is committed to becoming a mid-tier copper producer through its agreement in respect of the Chaucha project with Antofagasta PLC (LSE:ANTO) and its strategic exploration alliance with Rio Tinto (LSE:RTZ) in Ecuador.



Ascendant Copper Corporation, Chaucha Property - Figure 1

Naranjos

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From To Interval Copper Molybdenum Silver
Hole # (m) (m) (m) % % ppm
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NA-01 68 108 40 0.19 0.009 0.65
and 164 204 40 0.18 0.008 0.20
and 216 256(i) 40 0.41 0.015 0.75
including 246 256(i) 10 0.49 0.015 0.80
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(i) hole ended in mineralization
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NA-02 56 160 104 0.41 0.023 2.10
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and 212 260 48 0.46 0.019 1.83
including 230 252 22 0.50 0.022 1.82
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NA-03 54 166 112 0.54 0.029 2.63
including 54 92 38 0.62 0.020 2.89
including 110 134 24 0.57 0.032 2.83
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NA-04 Hole lost
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NA-05 152 168 16 0.27 0.004 1.44
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NA-06 42 94 52 0.30 0.018 2.65
Including 52 82 30 0.44 0.012 2.27
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NA-07 18 78 60 0.04 0.042 6.64
and 114 174 60 0.15 0.048 0.66
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NA-08 108 152 44 0.32 0.009 2.86
and 214 318 104 0.29 0.034 2.05
including 214 236 22 0.35 0.042 1.56
and 264 304 40 0.35 0.036 1.42
including 272 294 22 0.20 0.048 0.85
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NA-09 124 290 166 0.26 0.025 1.08
including 124 144 20 0.40 0.025 1.88
including 152 166 14 0.37 0.011 0.37
including 178 194 16 0.33 0.023 0.40
including 208 240 32 0.19 0.04 0.84
including 258 290 32 0.28 0.02 1.88
and 424 434 10 0.34 0.014 2.64
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NA-10 58 126 68 0.23 0.004 2.09
including 58 84 26 0.32 0.002 3.75
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Note: To view "Ascendant Copper Corporation, Chaucha Property - Figure 2, Cross Sections by wholly-owned subsidiary, Compania Minera DosRios S.A.", please click the following link: http://www.ccnmatthews.com/docs/acx0528.pdf

CONTACT INFORMATION
Ascendant Copper Corporation
John R. Haigh
Manager of Investor Relations
1-866-907-6047 or [phone]
Fax: [phone]
Email: [e-mail]
Website: www.ascendantcopper.com