Andover Reports Additional Assay Results From the 2012 Drill Program at Its Wholly Owned Sun Property, Alaska

VANCOUVER, 09/05/12 - Andover Mining Corp. ("Andover" or the "Company") (TSX VENTURE: AOX) (OTCBB: AOVTF) (FRANKFURT: R2X) is pleased to report updated results from its on-going drilling campaign at the SUN district project, located in the eastern end of the Ambler Mineral Belt (in the Southern Brooks Range, Northwestern Alaska).

Assays have been received from drill hole SUN 12-38, which targeted the S.W. SUN Deposit. Previously, drill hole SUN 12-37, representing a large step-out to the northeast and down dip from previous drilling at S.W. SUN, failed to intersect any significant mineralization and may have missed the target stratigraphy. Drill hole SUN 12-38, completed on August 12, 2012, was a smaller step-out to the northeast from known mineralization and successfully intersected massive sulfides. Results are summarized in the following table:

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       Angle/        Inter- Inter- Inter-
DDH     Bear-    TD   cept   cept    val  True   Cu    Pb    Zn    Ag    Au
ID #     ing     (m)  From     To    (m) Width   (%)   (%)   (%) (g/T) (g/T)
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SUN-    -60/  284.7  214.2  216.9    2.7   2.3 1.20% 0.49% 2.83% 54.3 0.304
 12-38   320
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Previous results from S.W. SUN drilling were reported in news releases dated August 22, 2012 and July 18, 2012.

Drilling continues on both the Main SUN Deposit and S.W. SUN Deposit. New assays will be released as they are received from ALS-Chemex. Drilling is planned to continue into September.

"The results from drill hole SUN 12-38 serves to extend S.W. SUN mineralization further down dip and may add significantly to the S.W. SUN resource," said Kent Turner, Andover's Chief Operating Officer. "We expect to be able to provide a National Instrument 43-101 compliant resource estimation on the S.W. SUN Deposit later this year or early in Q1, 2013."

"Drill hole SUN 12-38 provides important information about the continuity and grade of the massive sulfide mineralization at the S.W. Sun Deposit," states Brad Peek, General Manager of Andover's Ambler projects. "It's exciting to continue to build resource value at this developing new deposit."

The 2012 drill core was logged, split and boxed on site by Andover's geologists. Core from S.W. SUN was shipped to the ALS-Chemex Prep Lab in Fairbanks, Alaska. The pulps from Fairbanks were analyzed for 35 elements at the ALS-Chemex facilities in Vancouver, British Columbia and the gold assays were performed at ALS-Chemex facilities in Reno, Nevada. Base metal over-limits were wet assayed. Blanks and standards were inserted with each sample shipment.

This news release has been reviewed by Bradley C. Peek, Certified Professional Geologist (AIPG CPG-11299) and General Manager for Andover's Ambler District projects. Mr. Peek is a National Instrument 43-101 qualified person and is responsible for the technical aspects of this news release.


About Andover:

Andover is a precious and base metal exploration and development company focused on copper exploration at its flagship asset, the SUN project, located in the Ambler Mineral Belt, Northwest, Alaska. The Ambler Mineral Belt hosts world-class VMS deposits containing copper, zinc, lead, gold and silver. The Ambler Mineral Belt is one of the richest and most-prospective copper districts located in one of the safest geopolitical jurisdictions in the world. In Utah, Andover, through its 83.5% ownership of Chief Consolidated Mining Company whose lands located in the historic East Tintic Mining District, has a multi faceted development approach. The Big Hill project, where Kennecott Exploration Company can earn a 55% interest by carrying Chief through to the end of a Feasibility Study, is focused on a large porphyry copper prospect. The Burgin Complex, host to a limestone, silver lead zinc deposit has completed a PEA and is preparing this deposit and the Trixie gold mine toward exploitation.

For further information we invite you to visit us at www.andovermining.com.


ON BEHALF OF THE BOARD

Gordon Blankstein
CEO and Chairman



Neither TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.



Contacts:

Andover Mining Corp.
Richard Martens, Investor Relations
1-604-682-2168 or Int'l Toll Free: 1-800-266-4484
rick@andovermining.com
www.andovermining.com