TORONTO, ONTARIO -- (Marketwire) -- 04/27/12 --

All amounts are expressed in Canadian dollars, unless otherwise indicated.

IAMGOLD Corporation (TSX:IMG)(NYSE:IAG) ("IAMGOLD" or "the Company") and Trelawney Mining and Exploration Inc. (TSX VENTURE:TRR)(FRANKFURT:RTW) ("Trelawney") today announced that they have entered into a definitive agreement (the "Agreement") whereby IAMGOLD will acquire, through a plan of arrangement, all of the issued and outstanding common shares of Trelawney. Trelawney is a Canadian junior mining and exploration company, focused on the development of the Cote Lake Deposit located adjacent to the Swayze Greenstone Belt in northern Ontario.

Under the terms of the Agreement, each Trelawney shareholder will receive $3.30 in cash for each Trelawney share held. The transaction price represents a 36.6% premium based on Trelawney's 20-day volume weighted average price ("VWAP") for the period ending April 26, 2012.

"The acquisition of Trelawney creates a larger and more geographically balanced portfolio of long-life gold assets for IAMGOLD. This transaction provides an accretive return on invested capital as we are effectively redeploying the cash proceeds from the sale of non-core assets last year into a Canadian gold project that significantly strengthens our future gold production profile. This is consistent with our strategy to invest in development projects that we own and operate so we can derive maximum benefit from leveraging our operational and development expertise. Trelawney is an excellent strategic fit with our existing Canadian portfolio and we look forward to advancing this promising property," stated Stephen Letwin, President and Chief Executive Officer of IAMGOLD.

Trelawney's President and Chief Executive Officer Greg Gibson said, "Over the past three years, the Trelawney team has done a tremendous job in advancing the Cote Lake Project to its current status. I want to take this opportunity to thank all Trelawney employees for their contributions to the discovery and advancement of Cote Lake into a world class gold deposit. I am very proud of our success and the exceptional value that it has created for our shareholders. This acquisition will reward our shareholders with a significant premium that reflects this success."

Transaction Highlights

--  Offers Trelawney shareholders an immediate and attractive premium 
--  Large NI 43-101 resource open along strike and at depth 
    --  Indicated resource of 0.93 million ounces of contained gold(1) 
    --  Inferred resource of 5.94 million ounces of contained gold(1) 
    --  Increases IAMGOLD's inferred resources by 95% and measured and
        indicated resources by 5% 
--  Attractive location in northern Ontario's highly prospective gold
    producing region 
    --  Expands geographic footprint in one of the world's friendliest
        mining jurisdictions 
    --  Provides a more geographically balanced portfolio, where Canada will
        account for 35% of the resource base compared to 18% pre-
        acquisition(2) 
--  Significant exploration/expansion potential near current resource 
    --  Large 516km2 land package 
--  Step-out drilling continues to expand mineralization 
--  Financial strength 
    --  IAMGOLD and Trelawney have strong balance sheets with minimal debt 
    --  Timing of the potential development allows project to be funded from
        internal cash flow and available credit facilities 
    --  Aligned with strategy to continue growing dividend payout 
--  All cash transaction provides significant gold resource leverage with no
    dilution to IAMGOLD shareholders 

Trelawney's main asset is the advanced exploration Cote Lake Project, located in Ontario, Canada. On February 24, 2012, Trelawney announced an updated mineral resource estimate for Cote Lake, comprising 35 million tonnes at 0.82 g/t gold for 0.93 million ounces of indicated resources and 204 million tonnes at 0.91 g/t gold for 5.94 million ounces of inferred resources. Mineralization at Cote Lake has been intersected over a strike length of 1,200 metres, a horizontal width of 100 - 300 metres and a depth extent of more than 500 metres(1).

Gordon Stothart, Executive Vice President and Chief Operating Officer of IAMGOLD stated, "This project has the potential to become a large bulk tonnage operation, with significant economies of scale at competitive cash costs. I'm excited to have this asset as part of our portfolio. We believe the project has the potential and scale to significantly contribute to our future production and growth profile."

Terms of the Transaction

--  For each common share of Trelawney, IAMGOLD will pay $3.30 in cash. 
--  The fully diluted in the money value of the transaction is approximately
    $608 million with an enterprise value of $505 million net of cash. 
--  Represents a 36.6% premium based on Trelawney's 20-day VWAP for the
    period ending April 26, 2012. 
--  Completion of the transaction is subject to customary conditions,
    including court approvals, a favourable vote of at least 66 2/3% of the
    holders of Trelawney common shares voted at a special meeting of
    shareholders, and the receipt of all necessary regulatory approvals. 
--  The definitive agreement includes a non-solicitation clause, right to
    match covenants and provides for the payment of a $21 million break fee
    to IAMGOLD under certain circumstances. 
--  The transaction will be carried out via a plan of arrangement. Assuming
    Trelawney shareholders approve the transaction at the special meeting
    and final court approvals are obtained, the transaction is expected to
    close by the end of June. 
--  Shares held by IAMGOLD and shareholders who have agreed to voting
    arrangements, including management and the Board of Directors, represent
    approximately 13.3% of the current shares outstanding. 

Board Recommendations

The transaction has been approved by the Board of Directors of IAMGOLD and the Board of Directors of Trelawney following the unanimous recommendation of a special committee comprising independent Trelawney directors. The Board of Directors of Trelawney recommends that holders of Trelawney shares vote in favour of the transaction. RBC Capital Markets has provided an opinion to the Trelawney Board of Directors that the consideration to be received by Trelawney shareholders under the transaction is fair, from a financial point of view, to the Trelawney shareholders.

Advisors

IAMGOLD's financial advisor is GMP Securities L.P. and its legal advisor is Fasken Martineau DuMoulin LLP.

Trelawney's financial advisor is RBC Capital Markets and its legal advisor is Stikeman Elliott LLP.

Conference Call and Webcast

IAMGOLD will hold a conference call and webcast to discuss the proposed acquisition on Friday, April 27, 2012 at 8:30 a.m. (Eastern Daylight Time). A webcast of the conference call will be available through the Company's website - www.iamgold.com.

Conference Call Information: North America Toll-Free: 1-866-206-0240 or International number: 1-646-216-7111, passcode: 34099898#.

A live and archived webcast will be available at IAMGOLD's website at www.iamgold.com or Trelawney's website at www.trelawneymining.com.

IAMGOLD and Trelawney shareholders and other interested parties are advised to read the materials relating to the proposed transaction that will be filed with securities regulatory authorities in Canada when they become available. Anyone may obtain copies of these documents when available free of charge at the Canadian Securities Administrators' website at www.sedar.com.

A replay of this conference call will be available from April 27 to May 27 2012. Access this replay by dialing: North America toll-free: 1-866-206-0173 or International number: 1-646-216-7204, passcode: 272107#.

Footnotes

(1) Trelawney mineral resource on a 100% basis, based on current mineral resource estimate. Refer below for complete reference to the Technical Report.

(2) Measured and indicated resources and inferred resources for IAMGOLD are based on IAMGOLD's attributable share. Attributable mineral resources for Trelawney are included at 92.5%. See footnote 1 above for the mineral resource technical report reference.

Qualified Persons

Geoffrey Chinn P.Geo., Manager Resource Geology of IAMGOLD and David Beilhartz P.Geo, Vice-President Exploration of Trelawney, both Qualified Persons as defined under National Instrument 43-101, have reviewed and approved this disclosure having current knowledge of the project.

Scientific and Technical Disclosure

For complete disclosure of the Trelawney mineral resource estimate refer to the Technical Report on the Cote Lake Resource Update, Chester Property, Ontario, Canada reported in accordance with National Instrument 43-101 requirements, signed by W. Roscoe and B. Cook, Roscoe Postle Associates Inc., effective February 24, 2012.

Resource and reserve estimates in accordance with the CIM definitions.

Investors are cautioned that mineral resources are not mineral reserves and do not have demonstrated economic viability.

Forward Looking Statement

This news release contains forward-looking statements. All statements, other than of historical fact, that address activities, events or developments that the Company or Trelawney believes, expects or anticipates will or may occur in the future (including, without limitation, statements regarding the expected benefits of acquiring Trelawney, expected, estimated or planned gold and niobium production, cash costs, margin expansion, capital expenditures and exploration expenditures and statements regarding the estimation of mineral resources, exploration results, potential mineralization, potential mineral resources and mineral reserves) are forward-looking statements. Forward-looking statements are generally identifiable by use of the words "may", "will", "should", "continue", "expect", "anticipate", "estimate", "believe", "intend", "plan" or "project" or the negative of these words or other variations on these words or comparable terminology. Forward-looking statements are subject to a number of risks and uncertainties, many of which are beyond the Company's and Trelawney's ability to control or predict, that may cause the actual results of the Company or Trelawney to differ materially from those discussed in the forward-looking statements. In respect of the Company, factors that could cause actual results or events to differ materially from current expectations include, among other things, without limitation, failure to complete the acquisition of Trelawney or the failure to realize the benefits of such acquisition, to meet expected, estimated or planned gold and niobium production, cash costs, margin expansion, capital expenditures and exploration expenditures and failure to establish estimated mineral resources, the possibility that future exploration results will not be consistent with the Company's expectations, changes in world gold markets and other risks disclosed in IAMGOLD's most recent Form 40-F/Annual Information Form on file with the United States Securities and Exchange Commission and Canadian provincial securities regulatory authorities. In respect of Trelawney, factors that could cause actual results or events to differ materially from current expectations include, among other things, the timing and content of upcoming work programs, geological interpretations, receipt of property titles, potential mineral recovery processes and other risks disclosed in Trelawney's filings with Canadian provincial regulatory authorities. Any forward-looking statement speaks only as of the date on which it is made and, except as may be required by applicable securities laws, the Company and Trelawney disclaims any intent or obligation to update any forward-looking statement.

Cautionary Note to U.S. Investors

The United States Securities and Exchange Commission limits disclosure for U.S. reporting purposes to mineral deposits that a company can economically and legally extract or produce. IAMGOLD uses certain terms in this presentation, such as "measured," "indicated," or "inferred," which may not be consistent with the reserve definitions established by the SEC. U.S. investors are urged to consider closely the disclosure in the IAMGOLD Annual Reports on Forms 40-F. You can review and obtain copies of these filings from the SEC's website at http://www.sec.gov/edgar.shtml or by contacting the Investor Relations department.

About IAMGOLD

IAMGOLD (www.iamgold.com) is a leading mid-tier gold mining company producing approximately one million ounces annually from five gold mines (including current joint ventures) on three continents. In the Canadian province of Quebec, the Company also operates Niobec Inc., which produces more than 4.5 million kilograms of niobium annually, and owns a rare earth element resource close to its niobium mine. IAMGOLD is uniquely positioned with a strong financial position and extensive management and operational expertise. To grow from this strong base, IAMGOLD has a pipeline of development and exploration projects and continues to assess accretive acquisition opportunities. IAMGOLD's growth plans are strategically focused in certain regions in Canada, select countries in South America and Africa.

About Trelawney

Trelawney is a Canadian junior mining and exploration company with a growth-oriented strategy focused on expanding its gold resources and developing its Canadian mineral properties. The company's current focus is directed towards the development and continued exploration of its Cote Lake Project, located in Northern Ontario.

Please note:

This entire news release may be accessed via fax, e-mail, IAMGOLD's website at www.iamgold.com and through CNW Group's website at www.newswire.ca. All material information on IAMGOLD can be found at www.sedar.com or at www.sec.gov.

Si vous desirez obtenir la version francaise de ce communique, veuillez consulter le http://www.iamgold.com/French/Home/default.aspx.

Neither the TSX Venture Exchange nor its Regulation Services Provider accepts responsibility for the adequacy or accuracy of this news release.

Contacts:
Trelawney Mining and Exploration Inc.
Dave Reid
VP Investor Relations
(416) 363-8567 Ext. 104
Mobile: (705) 254-8303
info@trelawneymining.com

Contacts:
IAMGOLD Corporation
Bob Tait
VP Investor Relations
(416) 360-4743 or Mobile: (647) 403-5520

IAMGOLD Corporation
Laura Young
Director, Investor Relations
(416) 933-4952 or Mobile: (416) 670-3815
Toll-free: 1-888-464-9999
info@iamgold.com