Class Action Commenced Against Baja

VANCOUVER, BRITISH COLUMBIA -- (Marketwire) -- 07/27/12 -- Baja Mining Corp. ("Baja") (TSX: BAJ)(OTCQX: BAJFF) announces that class action proceedings have been commenced against Baja and certain of its present and former directors and employees under the Class Proceedings Act (Ontario). The proceedings have been commenced by Joseph Sue-Tang, who seeks an order certifying the proceeding as a class proceeding and his appointment as a representative plaintiff. Mr. Sue-Tang seeks among other relief a declaration that the defendants made misrepresentations contrary to the Securities Act (Ontario) during a class period extending from November 1, 2010 to April 23, 2012, general and special damages in the amount of $250 million, punitive damages in the amount of $10 million, interest and costs.

Baja is reviewing the claim and will defend itself against the action.

CAUTIONARY NOTE REGARDING FORWARD LOOKING STATEMENTS: This presentation contains forward-looking statements or forward-looking information (forward-looking statements). These statements can be identified by expressions of belief, expectation or intention, as well as those statements that are not historical fact. Forward-looking statements involve a number of risks, uncertainties and assumptions that could cause actual results or events to differ materially from those expressed or implied by the forward-looking statements. Forward-looking statements contained in this press release are based on our current estimates, expectations and projections, which the company believes are reasonable as of the current date. Actual results could differ materially from those anticipated or implied in the forward-looking statements and as a result undue reliance should not be placed on forward-looking information. Additional risks and uncertainties can be found in company's reporting documents filed on SEDAR (www.sedar.com), including its Management Discussion and Analysis in respect of the three month period ended March 31, 2012. Forward-looking statements are given only as at the date of this presentation and the company disclaims any obligation to update or revise the forward-looking statements, whether as a result of new information, future events or otherwise, except as required by law.

Contacts:

Baja Mining Corp.

Tom Ogryzlo

Interim CEO

604-685-2323

604-629-5228 (FAX)
info@bajamining.com
www.bajamining.com