Marengo Announces Presentation to Countdown to Copper Production in PNG

PERTH, March 22, 2012 - Marengo Mining Limited (TSX:MRN) (ASX:MGO) (POMSoX:MGO) wishes to inform the market, that a copy of the following has been today lodged with the ASX:

Investor Presentation - Countdown to Copper Production in PNG

A digital copy of this announcement can be viewed on our website at under "ASX Announcements".

Please note that the Head Office of Marengo is located in Western Australia and is 12 hours ahead of Toronto time.

This news release does not constitute an offer to sell or the solicitation of an offer to buy any ordinary shares within the United States. The ordinary shares have not been offered and will not be registered under the United States Securities Act of 1933, as amended (the "1933 Act"), or any state securities laws. Accordingly, the ordinary shares may not be offered or sold in the United States or to U.S. persons (as such terms are defined in Regulation S under the 1933 Act) unless registered under the 1933 Act and applicable state securities laws or an exemption from such registration is granted.


NOTES:

Certain statements in this report contain forward-looking information. 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 achievement expressed or implied by the statements. Such factors include among others, the results of future exploration, risks inherent in resource estimates, increases in various capital costs, availability of financing and the acquisition of additional licences, permits and surface rights. Readers are cautioned not to place undue reliance on these forward looking statements, which speak only as if the date the statements were made, and readers are advised to consider such forward looking statements in the light of the risks set forth in the Company's continuous disclosure filings, as found at the (Canadian) SEDAR website.

This news release does not constitute an offer to sell or the solicitation of an offer to buy any ordinary shares within the United States. The ordinary shares have not been offered and will not be registered under the United States Securities Act of 1933, as amended (the "1933 Act"), or any state securities laws. Accordingly, the ordinary shares may not be sold or offered in the United States, or to any U.S. persons (as such terms are defined in Regulations under the 1933 Act) unless registered under the 1933 Act and applicable state securities laws, or an exemption from such registration are granted.

NOT FOR DISTRIBUTION TO UNITED STATES NEWSWIRE SERVICES OR FOR DISSEMINATION IN THE UNITED STATES.

ABN: 57 099 496 474

YANDERA MINING COMPANY LIMITED (COMPANY NO. 1-53202)
MARENGO MINING (PNG) LIMITED (COMPANY NO. 1-76844)



Contact Information

Marengo Mining Limited
Les Emery, Managing Director
+61 8 9429 0000
marengo@marengomining.com

Investor Relations:
Marengo Mining Limited - Australia
Dean Richardson, VP-Investor Relations
+61 8 9429 0000
deanr@marengomining.com

Marengo Mining Limited - North America
Victoria Russell, Investor Relations
+1 416 644 8680
investor@marengomining.com
www.marengomining.com