News Releases

March 4, 2011

Two Technical Reports Anticipated Soon

Vancouver, British Columbia - Metalline Mining Company (TSX: MMZ, AMEX: MMG) ("Metalline") advises that two technical reports concerning its Sierra Mojada Project, Mexico are currently being prepared for publication this month.

In April, 2010, Metalline merged with Dome Ventures Corporation. Since that time, numerous Board and management changes have been made and new management has been reviewing all aspects of the Sierra Mojada Project.

Metalline has retained Nilsson Mine Services Ltd. to prepare a new NI43-101 technical report on part of the shallow silver zone (called Area A) on Metalline's Sierra Mojada Project that was drilled during 2009/2010. Metalline expects to receive and release this report later this month. The planned 2011 exploration program provides for drilling the Northern and Eastern extension of the Area A silver zone.

Metalline has also retained JDS Energy & Mining Inc. to prepare a contemporary report summarizing all known data concerning the zinc oxide deposit present at the Sierra Mojada Project. Metalline expects to receive and release this report later this month.

About Metalline Mining Company

Metalline Mining Company is focused on the acquisition, exploration and development of mineral properties. Metalline currently owns mineral concessions in the municipality of Sierra Mojada, Coahuila, Mexico and holds exploration licenses in Gabon, Africa. Metalline conducts its operations in Mexico through its wholly owned Mexican subsidiaries, Minera Metalin S.A. de C.V. and Contratistas de Sierra Mojada S.A. de C.V. To obtain more information on Metalline Mining Company, visit the Company's web site at

On behalf of the Board of Directors

Timothy T. Barry, Aus IMM

Chief Executive Officer, President and Director

Anthony Srdanovic
Manager Corporate Communications
Office: (604) 687-5800
Metalline Mining Company
Suite 2200 -- 885 West Georgia St.
Vancouver, BC V6C 3E8

Forward-Looking Statements

This news release contains forward-looking statements that are subject to the safe harbors created under the Securities Act of 1933 (the "Securities Act") and the Securities Exchange Act of 1934 (the "Exchange Act") and constitute "forward looking information" within the meaning of Canadian securities laws. These statements are statements regarding the delivery of certain reports by Metalline's third party consultants and are based on material factors and assumptions including Metalline's management's current expectations. Words such as "expects," "anticipates," "targets," "goals," "projects," "intends," "plans," "believes," "seeks," "estimates," "continues," "may," variations of such words, and similar expressions, are intended to identify such forward-looking statements. Readers are cautioned that these forward-looking statements are only predictions and are subject to risks, uncertainties, and assumptions that are difficult to predict, including the fact that Metalline cannot control the actions of its third party consultants. Therefore, actual results may differ materially and adversely from those expressed in any forward-looking statements. Metalline undertakes no obligation to revise or update any forward looking statements for any reason.