Pacific Rim Mining Announces Fiscal 2013 First Quarter Results

VANCOUVER, BRITISH COLUMBIA -- (Marketwire) -- 09/07/12 -- Pacific Rim Mining Corp. (TSX: PMU)(OTCQX: PFRMF) ("Pacific Rim" or "the Company") reports its financial and operating results for the three months ended July 31, 2012. Details of the Company's financial results are provided in its interim consolidated financial statements and Management's Discussion and Analysis ("MD&A") that will be publicly filed and made available to shareholders shortly. All monetary amounts are expressed in United States ("US") dollars unless otherwise stated.

Nature of Operations

Pacific Rim is an environmentally and socially responsible exploration company whose business plans and management talent focus on high grade, environmentally clean gold deposits in the Americas. Pacific Rim's most advanced asset is the vein-hosted El Dorado gold project in El Salvador, where the Company also owns several grassroots gold projects. The Company holds a joint venture option on the Hog Ranch epithermal gold project in Nevada and is actively pursuing additional exploration opportunities elsewhere in the Americas.

All references to "Pacific Rim" or "the Company" encompass the Canadian corporation, Pacific Rim Mining Corp, its U.S. subsidiaries (Pac Rim Cayman LLC ("PacRim"), Pacific Rim Exploration Inc., and Dayton Mining (U.S.) Inc.), and Salvadoran subsidiaries (Pacific Rim El Salvador, S.A. de C.V. ("PRES") and Dorado Exploraciones, S.A. de C.V. ("DOREX"), inclusive.

The Company's business activity is focused on three main priorities: resolution of the El Dorado project permitting impasse, exploration of the Hog Ranch gold project and generation of new project opportunities. The El Dorado project is the subject of an arbitration claim (the "Arbitration") (more thoroughly described in the Company's Q1 2013 MD&A and Fiscal 2012 MD&A) being heard at the International Center for the Settlement of Investment Disputes ("ICSID") at the World Bank. During Q1 2013 the Arbitration was given permission by ICSID to proceed, under the Investment Law of El Salvador, to its final phase wherein the merits of the claim will finally be addressed at ICSID headquarters in Washington, DC. Notwithstanding the ongoing legal action, the Company continues to seek a negotiated resolution to the El Dorado permitting impasse and to resuming its advancement of the El Dorado project. The Company holds an option to earn a 65% interest in the Hog Ranch gold property in Nevada. Based on the results of a surface exploration program conducted over the past year, during Q1 2013 the Company selected targets for, and recently received a permit to conduct, a Phase 1 drill program on the Hog Ranch property.

Pacific Rim's shares trade under the symbol PMU on the Toronto Stock Exchange ("TSX") and on the OTCQX market in the US under the symbol PFRMF.

Results of Operations

For the three month period ended July 31, 2012, Pacific Rim recorded a net loss of $(0.6) million ($(0.00) per share), compared to net income of $0.2 million ($0.00 per share) for the same period a year earlier. The income recorded for Q1 2012 is primarily a result of a gain on derivative liability of $1.0 million, related to changes in the fair value of common stock warrants issued by the Company during recent private placement financings. This unrealized income more than offset the expenses incurred during Q1 2012, which led to the comprehensive income of $0.2 million recorded for the period. During Q1 2013, the gain on derivative liability was $0.1 million, which was insufficient to offset the expenses incurred during the period, the result being a comprehensive loss for the period of $(0.6) million.

Expenses

Exploration expenses were $0.3 million for each of Q1 2013 and Q1 2012, and relate primarily to the exploration activities undertaken at the Hog Ranch property during both periods. General and administrative expenses were also unchanged, totalling $0.1 million during each of Q1 2013 and Q1 2012. Expenses related to the Arbitration action were slightly less in Q1 2013 ($0.05 million) than in Q1 2012 ($0.13 million) reflecting a low level of activity pertaining to the arbitration during both quarterly periods.

As described above, during Q1 2013 the Company recorded an unrealized gain on derivative liability of $0.1 million (compared to $1.0 million during Q1 2012).

Unusual Items

There were no unusual items in either of Q1 2013 or Q1 2012.

Summary

Despite slightly lower exploration, general and administrative and Arbitration costs during Q1 2013 compared to Q1 2012, the Company recorded a net loss and comprehensive loss for Q1 2013 of $(0.6) million or $(0.00) per share compared to net income of $0.2 million or $0.00 per share for Q1 2012, which difference is primarily a result of substantially higher gains on derivative liability recorded during Q1 2012 compared to Q1 2013.

Liquidity and Capital Resources

Cash

During Q1 2013 the Company's cash and cash equivalents decreased by $0.2 million from $0.8 million at April 30, 2012 to $0.6 million at July 31, 2012. Short-term investments decreased from $0.5 million at April 30, 2012 to $nil at July 31, 2012. As a result of these increases in cash and cash equivalents and short-term investments, current assets decreased by $0.7 million during Q1 2013, from $1.4 million at April 30, 2012 to $0.7 million at July 31, 2012. This decrease reflects the redemption of short term investments and the subsequent expenditures of cash on exploration expenses and project generation efforts, general and administrative costs associated with maintaining a public company, and expenditures related to the Arbitration action.

The Company's financial statements have been prepared on the basis that the Company will continue as a going concern, which assumes that the Company will be able to meet its commitments, continue operations, realize its assets and discharge its liabilities in the normal course of business for the foreseeable future. There are events and conditions that cast substantial doubt on the validity of that assumption. The Company will require additional financing to continue to conduct ongoing exploration programs and to meet future property commitments, for administrative purposes and for legal expenses related to the Arbitration. The costs for this legal action are substantial and are anticipated to increase as the case proceeds to through the final, merits-based phase. Factors that could affect the availability of financing include fluctuations in the Company's share price, the state of international debt and equity markets, investor perceptions and expectations, global financial and metals markets, progress on any of the Company's exploration properties, and developments, if any, on the El Dorado project permitting application. The Company believes it will be able to obtain the necessary financing to meet its requirements on an ongoing basis; however, there can be no assurance that the necessary financing will be obtained, and such financing, if available, may be dilutive to the Company's shares and shareholders. As it has in the past, the Company plans to obtain additional financing through, but not limited to, the issuance of additional equity.

(The foregoing two paragraphs contain forward-looking statements regarding the requirement for financing and the use of funds that may be raised. See Forward-Looking Information.)

Working Capital

At July 31, 2012, the value of the Company's current assets was $0.7 million, compared to $1.4 million at April 30, 2012, a decrease of $0.7 million. This decrease in current assets from the end of the last fiscal year to the end of the first quarter of the current fiscal year is primarily a result of the redemption of the Company's remaining short term investments coupled with expenditures of cash on exploration, general and administrative responsibilities and the Arbitration action. Resource property balances at July 31, 2012 were negligibly higher than the April 30, 2012 balance ($5.51 million and $5.49 million respectively).

At July 31, 2012 the Company had current liabilities of $1.61 million, marginally lower than the April 30, 2012 balance of $1.64 million due to a slight decrease in accounts payable and accrued liabilities. Of the accounts payable and accrued liability balances, $1.4 million at both July 31, 2012 and April 30, 2012 is due to one vendor associated with the Arbitration action.

The $0.7 million decrease in current assets combined with the marginal decrease in current liabilities, resulted in a $0.7 million decrease in working capital from $(0.2) million at the end of fiscal 2012 to $(0.9) million at the end of Q1 2013.

Financial Condition

The Company does not intend to resume significant exploration programs in El Salvador until such time as the El Dorado environmental permit and exploitation concession are received. The Company cannot judge if or when the required permits will be received and is not currently planning any exploration programs for its El Dorado, Santa Rita and Zamora-Cerro Colorado properties for the immediate future beyond what is necessary to keep all of its exploration licences in good standing. Should the required permits be granted, the Company will evaluate its options for resuming full scale exploration work designed to advance its El Salvador projects.

During Q1 2013, following completion of a surface work program during fiscal 2012, the Company applied for and was granted a drill permit to conduct a 10-15-hole (approximately 12,000 meter) drill program at the Hog Ranch property, which permit allows for expanding the drill program to 31 holes. The Hog Ranch drill program is planned to commence in fiscal 2013 subject to financing and sourcing of drill contractors. Acquisition of the Remance project is in doubt and therefore, no exploration plans for Remance are being contemplated at this time. However, if a final acquisition agreement on Remance is signed, as per the terms of the Remance LOI the Company will be responsible for undertaking a $1 million exploration program in the first year of the option period. The Company intends to continue its project generation initiatives with the aim of evaluating and possibly acquiring new exploration properties of merit that fit its exploration focus.

The Company anticipates that the Hog Ranch drill program and associated exploration will cost approximately $1.5 million, with a further $1 million required in the event the Remance property is acquired. Minimal expenditures are anticipated for generative exploration work. The Company will require additional financing in order to carry out the planned Hog Ranch drill program, as well as any other future exploration work of a substantive nature.

(The foregoing two paragraphs contain forward-looking statements regarding the scope and anticipated costs of exploration and generative work programs management intends to undertake during fiscal 2013. See Forward-Looking Information.)

The Company's general and administrative costs are expected to remain stable during fiscal 2013. Expenditures related to the Arbitration claim are expected to increase substantially as the case proceeds through the final phase. The Company has currently accumulated a liability of approximately $1.4 million related to the Arbitration and is currently discussing vendor-specific alternative financing opportunities aimed at reducing this accounts payable position. Additional working capital (likely through equity financing) will be required to fund ongoing general and administrative costs. The costs associated with the final phase of the Arbitration action are expected to be high. The Company is currently exploring various alternative financing opportunities to fund the legal costs associated with the Arbitration while minimizing dilution to its current share structure. In this regard the Company has received encouraging feedback from potential sources of non-equity financing.

(The foregoing paragraph contains forward-looking statements regarding anticipated general and administrative expenses for fiscal 2013, and the requirement for additional financing to fund legal costs and future general working capital expenses. See Forward-Looking Information.)

The business of mining and exploration involves a high degree of risk and there can be no assurance that any of the Company's current exploration projects will result in profitable mining operations. The Company has no source of revenue, and will require additional cash to continue to fund legal, exploration and administrative expenses. As at July 31, 2012, the Company has working capital deficit of $(0.9) million, has incurred losses since inception and has an accumulated deficit of $90.4 million. The Company's ability to continue operations and exploration activities as a going concern is dependent upon its ability to obtain future financing. The Company will need to raise additional funds during fiscal 2013 to support exploration and administration expenses as well as costs pertaining to the Arbitration action. While the Company has been successful in obtaining financing in the past, there is no assurance that sufficient funds will be available to the Company, or be available on favourable terms in the future. Factors that could affect the availability of financing include fluctuations in the Company's share price, the state of international debt and equity markets, investor perceptions and expectations, global financial and metals markets, progress on any of the Company's exploration properties, and developments, if any, on the El Dorado project permitting application. Additional financing will require, but may not be limited to, the issuance of additional equity. Readers are encouraged to thoroughly review the Risks and Uncertainties detailed in the Company's MD&A for fiscal 2012.

Outlook

Exploration

After completing a Phase 1 exploration program on the Hog Ranch property during fiscal 2012, which included detailed geological and structural mapping, detailed soil sampling, evaluating past drilling and geophysical results from previous operators and formulating a geologic model, the Company applied for and was granted during Q1 2013 a drill permit to conduct a 10-15 hole (approximately 12,000 meter) Phase 1 drill program program at Hog Ranch, which permit allows for expansion of the drill program to 31 holes. This Phase 1 drill program is expected to commence during fiscal 2013, subject to financing, and sourcing of drill contractors.

The Company's acquisition of the Remance property is on hold and highly uncertain at this time, pending the vendor's legal appeal of the Government of Panama's recent decision to deny extension of the Remance concession term. While the Company is keeping the Remance LOI in effect during Minera Clifton's appeal, it does not intend to sign a final agreement to acquire the Remance project unless the term of the concession is extended.

The Company will continue to curtail its exploration programs and expenditures in El Salvador until such time as PRES receives the El Dorado environmental permit and exploitation concession. The Company remains hopeful that it will either receive the El Dorado permit and mining concession or that it will be appropriately compensated. The Company will continue to seek opportunities for dialogue with the GOES aimed at resolving its permitting issues in El Salvador including receipt of the environmental and mining permits for the El Dorado project as well as re-establishing the exploration licence for Santa Rita.

The Company continues to seek new project opportunities in North and Central America.

The Phase 1 Hog Ranch drill program described above is expected to cost approximately $1.5 million and will constitute the Company's primary exploration initiative planned for fiscal 2013. Commencement of this drill program is dependent on securing adequate future financing, and procurement of drill contractors. If the Remance project is acquired, the Company will require financing to undertake an exploration program, as per the terms of its Remance letter of intent that is anticipated to cost approximately $1.0 million. Additional exploration work required to keep all of its El Salvador projects in good standing, and exploration expenses related to the Company's generative programs, will continue through fiscal 2013 and for the foreseeable future.

(The foregoing paragraph contains forward-looking statements regarding the Company's exploration plans and anticipated costs during fiscal 2013 and beyond, its efforts to settle the El Dorado permit impasse, and its requirements for additional funding. See Forward-Looking Information.)

General and Administrative and Legal

The Company's general and administrative costs are expected to remain stable during fiscal 2013. Expenditures related to the Arbitration claim are expected to increase substantially as the case proceeds through the final phase. The Company is currently exploring various alternative financing opportunities to fund the legal costs associated with the Arbitration while minimizing dilution to its current share structure.

The Company will continue to seek opportunities for dialogue with the GOES aimed at resolving the El Dorado permitting situation. The Company and its subsidiaries have a well-documented history of supporting local inhabitants and building relationships with all stakeholders. This is a key component of the Company's approach to exploration and development, and will continue in all jurisdictions in which it and its subsidiaries operate.

Unless these diplomatic efforts are successful, the Arbitration action is expected to proceed during fiscal 2013 and beyond. The Company and its legal team are currently preparing for the final phase of the Arbitration in which the merits of the claim will finally be heard by the ICSID Tribunal overseeing the case. During this final phase, the Tribunal will determine whether El Salvador has breached Salvadoran and international law by refusing to issue the necessary mining licenses for the El Dorado Mine. They will also determine El Salvador's monetary liability for breaching the investment protections owed to a foreign investor as per in its own laws. The Company is seeking alternative financing arrangements specifically ear-marked for legal expenses related to the Arbitration.

(The foregoing paragraph contains forward-looking statements regarding anticipated general and administrative expenses during fiscal 2013, and the requirement for additional financing pertaining to the Arbitration action. See Forward-Looking Information.)

Key Issues

Important corporate and technical issues facing the Company in the coming fiscal months (and beyond) include: the Company's ability to secure adequate financing for exploration expenses including the planned Hog Ranch drill program, maintenance of the El Salvador and Nevada properties and general working capital purposes; the Company's ability to secure financing for the continuation of the Arbitration action; developments related to the Arbitration action; the execution and outcome of the Company's Phase 1 drill program at the Hog Ranch property; developments related to the potential signing of a formal option agreement to acquire the Remance project and the subsequent undertaking of an exploration and drilling program at Remance if, as, and when it is formally acquired; and, the continued search for additional exploration project opportunities. The Company has been successful in raising funds through equity financing in the past but there can be no assurance that such financing will be available in the future, or if so, available under favourable terms, or that alternatively, financing through means other than the issuance of equity can be achieved. Readers are strongly encouraged to review the Risks and Uncertainties thoroughly detailed in the Company's fiscal 2012 MD&A.

(The foregoing paragraph contains forward-looking statements regarding management's assessment of the key issues facing the Company during fiscal 2013 and the requirement for additional financing. See Forward-Looking Information.)

On behalf of the board of directors,

Thomas C. Shrake, President and CEO

Forward-Looking Information

The information contained herein contains "forward-looking statements" within the meaning of Section 21E of the United States Securities Exchange Act of 1934 (as amended) and applicable Canadian securities legislation. Forward-looking statements relate to analyses and other information that are based on forecasts of future results, estimates of amounts not yet determinable and assumptions of management. Any statements that express predictions, expectations, beliefs, plans, projections, objectives, assumptions or future events or performance are not statements of historical fact and may be "forward-looking statements". Statements concerning reserves and mineral resource estimates may also be deemed to constitute forward-looking statements to the extent that they involve estimates of the mineralization that will be encountered if the property is developed, and in the case of mineral reserves, such statements reflect the conclusion based on certain assumptions that the mineral deposit can be economically exploited.

This report contains forward-looking statements regarding:

--  the Company's requirement for financing and the use of funds that may be
    raised. These assumptions are based on management's estimate of working
    capital requirements and past expenditures. There are no guarantees that
    future financing will be available to the Company under acceptable terms
    and conditions. Readers are cautioned that without additional financing
    the Company's ongoing exploration plans may not be carried out as
    anticipated and its ability to continue its business may be at risk.
--  the scope of exploration and generative work programs management plans
    to undertake during fiscal 2013 and in the foreseeable future. These
    expectations are based on various assumptions including but not limited
    to: the Company's ability to secure financing, procure contractors and
    obtain permits necessary to commence the proposed Hog Ranch drill
    program; the Company and/or its subsidiary's signing of a Formal
    Agreement to acquire the Remance project; the Company and/or its
    subsidiaries' continued title and access to the El Dorado, Santa Rita
    and Zamora-Cerro Colorado properties; the availability and accessibility
    of projects the Company may be interested in acquiring; the availability
    of sufficient working capital and access to financing; the ability to
    procure adequate experienced staff; the availability of contractors; and
    other risks and uncertainties. Should any of these assumptions prove
    incorrect or requirements not be met, the Company's project generation
    and exploration for fiscal 2013 and beyond may not occur as planned.
--  the Company's intent to forego significant exploration work at the El
    Salvador projects until certain permits are granted, the implication
    being that if and when these permits are granted increased investments
    in exploration will be made in El Salvador. Readers are cautioned that
    this statement conveys management's intent but that resumption of a
    large-scale exploration program at the El Salvador projects is dependent
    on not only the PRES's receipt of the El Dorado permit but also the
    availability of adequate financing, the ability to procure adequate
    experienced staff, the availability of contractors, and other risks and
    uncertainties. Should any of these assumptions prove incorrect or
    requirements not be met, the Company's project generation and
    exploration plans for the remainder of fiscal 2012 may not occur as
    planned.
--  the Company's exploration plans and anticipated costs for fiscal 2013
    and beyond. The anticipated exploration expenditures reflect estimations
    made by management based on current levels of expenditure and
    anticipated work programs as described previously. Should unexpected
    costs arise, exploration expenditures may differ from those currently
    anticipated.
--  anticipated general and administrative, and legal expenses and the
    requirement for additional financing to fund these legal costs and
    general working capital expenses. These statements are based on
    management's assumption the Arbitration action will continue through
    fiscal 2013 and the expected costs of pursuing this action, plus the
    Company's anticipated burn rate for general and administrative costs.
    Should PRES receive the El Dorado permits at any time, the necessity to
    continue the CAFTA action may be averted and the anticipated impact on
    general and administrative costs may not materialize.

Forward-looking statements are subject to a variety of risks and uncertainties, which could cause actual events or results to differ from those reflected in the forward-looking statements, including the risks and uncertainties outlined above and other risks and uncertainties related to the Company's prospects, properties and business detailed in its fiscal 2012 MD&A, in the Company's Annual Information Form for the year ended April 30, 2012 and in the Company's most recent Annual Report on Form 20F filed with the US Securities and Exchange Commission. Should one or more of these risks and uncertainties materialize, or should underlying assumptions prove incorrect, actual results may vary materially from those described in forward-looking statements. Investors are cautioned against attributing undue certainty to forward-looking statements. The Company does not undertake to update any forward-looking statements that are incorporated by reference herein, except in accordance with applicable securities laws.

National Instrument 43-101 Disclosure

Mr. William Gehlen, Vice President Exploration, supervises Pacific Rim's exploration work on the El Dorado project. Mr. Gehlen is a Certified Professional Geologist with the AIPG (No. 10626), an employee of the Company and a Qualified Person as defined in NI 43-101.

Mr. David Ernst, Chief Geologist, supervises the Company's project generation initiatives and conducted due diligence geological investigations and confirmatory sampling at the Remance Project . Mr. Ernst is geologist licensed by the State of Washington, an employee of Pacific Rim and a Qualified Person as defined in NI 43-101.

Pacific Rim's sampling procedures follow the Exploration Best Practices Guidelines outlined by the Mining Standards Task Force and adopted by The Toronto Stock Exchange. Samples are assayed using fire assay with a gravimetric finish on a 30-gram split. Quality control measures, including check- and sample standard-assaying, are being implemented. Samples are assayed by Inspectorate America Corporation in Reno, Nevada USA, an ISO 9002 certified laboratory, independent of Pacific Rim Mining Corp.

The TSX has neither reviewed nor accept responsibility for the adequacy or accuracy of this release.

Contacts:

Pacific Rim Mining Corp.

Barb Henderson

(604) 689-1976 or Toll Free 1-888-775-7097

(604) 689-1978 (FAX)
general@pacrim-mining.com
www.pacrim-mining.com