MMG Metalline Mining Company Common Stock

COEUR D'ALENE, Idaho, Feb. 21 /PRNewswire-FirstCall/ -- Metalline Mining Company (AMEX:MMG) is aware that there is some confusion in the marketplace about the progress on our feasibility study. The process for performing the study is described in some detail in our recent 10-KSB filings and investors are urged to read the information provided in those documents. For clarification, the feasibility study consists of reports, termed Complimentary Reports, on major portions of the feasibility study. These reports are compiled and written by the contractor performing the specific part of the study. Complimentary Reports are completed for the metallurgy, resource model, geotechnical studies, geology and the preliminary (conceptual) mine plan. The results of the studies so far received are evaluated and provide necessary engineering input to other parts of the study. The engineering design process is iterative, so that the results of one part of the study normally result in changes in other parts. The reports so far received are significant parts of the continuing feasibility study, but are subject to modification and do not constitute the complete study. The final feasibility study document will be a summary document that references the conclusions of the Complimentary Reports to develop the case for economic viability for the overall project to exploit the Sierra Mojada mineral occurrence. The level of detail of the resulting study is designed to yield an estimate with an accuracy of around +/- 10 to 15% of the cost to construct and operate mine, concentrator, and refinery facilities, to demonstrate that the facilities would be compliant with relevant business and environmental regulations, and that there exist no barriers that might prevent completion of the proposed project. Under the rules of some national regulatory bodies, the results of feasibility studies may be released in multiple stages as work progresses. However, under the regulations of the U. S. Securities and Exchange Commission, specific disclosures can generally be made only after completion of a definitive feasibility study. The level of precision required of a feasibility study under SEC rules is very rigorous. Release by Metalline of some of the information contained within the studies received to date, prior to completing the entire feasibility study, would likely constitute a violation of SEC regulations. Consequently the reports received are treated as confidential information and are not available for public release. Metalline does release information on the overall status of the feasibility project and has and will continue to release information of a material nature on all of our activities as it becomes available. About the Company Metalline Mining Company is an exploration stage enterprise engaged in the business of mining. The Company currently owns mining concessions in the municipality of Sierra Mojada, Coahuila, Mexico. The Company 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 (http://www.metalin.com/). Forward-Looking Statements This news release contains forward-looking statements regarding future events and Metalline's future results 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"). These statements are based on current expectations, estimates, forecasts, and projections about the industry in which Metalline operates and the beliefs and assumptions of Metalline's management. 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. In addition, any statements that refer to projections of Metalline's future financial performance, Metalline's anticipated growth and potentials in its business and other characterizations of future events or circumstances are 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 those identified elsewhere herein and Metalline's Annual Report on Form 10-KSB for the fiscal year ended October 31, 2007 under "Risk Factors." 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. DATASOURCE: Metalline Mining Company CONTACT: Metalline Mining Company, +1-208-665-2002, Fax, +1-208-665-0041, Web site: http://www.metalin.com/

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