Marimaca Copper Corp. (“Coro” or the “Company”) (TSX Symbol: COP) wishes to advise that it became aware today that its largest shareholder, Benton Capital Corp. (“Benton”, symbol: BTC), announced that it has entered into new business sector via a binding letter of intent (“LOI”) with Folium Life Science Inc. and in addition, intends to transfer its shares in Marimaca Copperto its shareholders via a return of capital. At the date of this announcement, Benton holds ~38% of the Company’s common shares on a fully diluted basis and 34.3% on an undiluted basis.

Marimaca Copperwould like to express its appreciation for the support provided by Benton over the past 5 years, and wishes it well in its new endeavour. We look forward to welcoming our new shareholders as they can now participate directly in the development and growth of our Chilean focussed mining company.

For further information regarding the proposed Benton transaction, interested parties should review the press release issued by Benton, which is available on SEDAR at www.sedar.com . Marimaca Copperhas not approved the contents of the Benton press release and takes no responsibility for its contents.

CORO MINING CORP.

“Alan Stephens”

Alan Stephens
President and CEO

About Marimaca Copper Corp.:
The Company was founded with the goal of building a mining company focused on medium-sized base and precious metals deposits in Latin America. The Company intends to achieve this through the exploration for, and acquisition of, projects that can be developed and placed into production. Coro’s properties include the Berta, El Desesperado, and Payen copper properties located in Chile and the advanced San Jorge copper-gold project, in Argentina.

For further information please visit the Company’s website at www.coromining.com or contact Michael Philpot, Executive Vice-President at (604) 682 5546 or [email protected]

This news release includes certain “forward-looking statements” under applicable Canadian securities legislation. Such forward-looking statements or information, including but not limited to those with respect to future transactions involve known and unknown risks, uncertainties, and other factors which may cause the actual results, performance or achievements of the Company to be materially different from any future results, performance or achievements expressed or implied by such forward-looking statements or information. Such factors include, among others, the actual prices of copper, the factual results of current exploration, development and mining activities, changes in project parameters as plans continue to be evaluated, as well as those factors disclosed in the Company’s documents filed from time to time with the securities regulators in the Provinces of British Columbia, Alberta, Saskatchewan, Manitoba, Ontario, New Brunswick, Nova Scotia, Prince Edward Island and Newfoundland and Labrador.

SA drill program later this year.

San Jorge Copper Development Project

On March 5th 2012, Marimaca Copperannounced the results of a Preliminary Feasibility Study for its San Jorge project in Argentina, which comprises a proposed rock quarrying operation in Mendoza province together with an SXEW plant located in adjacent San Juan province, for the production of up to 25,000 tonnes per year of copper in cathode.

On December 9^th 2013, Marimaca Copperannounced the execution of a binding Heads of Agreement with a group comprised of Aterra Investments Ltd. and Solway Industries Ltd. giving them rights to acquire up to a 70% interest in the project, with the provision for an early buy-out of Coro’s interest, subject to Coro’s retention of a 2.5% Net Smelter Return on the production of all payable metals from the project, except gold.

Aterra and Solway have now taken over management of the project, and the parties are working towards the expeditious execution of a definitive agreement, which includes a cash payment to Marimaca Copperof US$300,000 within 6 months of its signature, and two further payments of US$500,000 each on the first and second anniversary dates of signature.

El Desesperado Copper Exploration Project

On February 27^th 2014, Marimaca Copperannounced the results of a 5 hole, 1191m diamond drilling program and a 7 hole, 950m reverse circulation drilling program at the El Desesperado copper project, located 7 km NW of the city of Calama in the II Region of Chile. A thorough review of the exploration results concluded that the near surface mineralization intersected in drilling comprises both oxidized and enriched structurally controlled mineralization, and transported exotic copper oxides, but disappointingly of more limited extent than anticipated. A porphyry copper system may be present at unknown depth beneath this mineralization, but given the high risk nature of the target and the cost of testing it, both in terms of drilling and property payments, Marimaca Copperhas elected to terminate the option to acquire the property.

Corporate Strategy Update

Using our in-house exploration and development expertise, Coro’s strategy is to grow a mining business in Chile through the discovery, development and operation of “Marimaca Coppertype” deposits. These are defined as projects at whatever stage of development that are well located with respect to infrastructure and water, or to third party owned plants with spare capacity, and which have the potential to achieve a short and cost effective timeline to production. Our preference is for open pit heap leach copper projects, where we will seek to minimise capital investment rather than maximise NPV, where we will prioritise profitability over production rate, and finally, where the likely capital cost is financeable relative to our market capitalization. Partners will be sought for any attractive projects identified that we do not have the financial capacity to develop alone.

Cash Balance
As at March 31^st 2014, Marimaca Copperhad a cash balance of US$1.3m. In addition, the outstanding US$500,000 payment from the sale of the Chacay property last year is expected to be received later this quarter or early next.

Alan Stephens, FIMMM, President and CEO, of Marimaca Copper Corp, a geologist with more than 38 years of experience, and a Qualified Person for the purposes of NI 43-101, is responsible for the contents of this news release.

CORO MINING CORP.

“Alan Stephens”

Alan Stephens
President and CEO

About Marimaca Copper Corp.:
The Company was founded with the goal of building a mining company focused on base and precious metals deposits in Latin America. The Company intends to achieve this through the exploration for, and acquisition of, projects that can be developed and placed into production in Chile. Coro’s properties include the Berta, Payen, Celeste and Llancahue copper properties in Chile and the advanced San Jorge copper-gold project, in Argentina.

For further information please visit the Company’s website at www.coromining.com or contact Michael Philpot, Executive Vice-President at (604) 682 5546 or [email protected]

This news release includes certain “forward-looking statements” under applicable Canadian securities legislation. Such forward-looking statements or information, including but not limited to those with respect to future transactions involve known and unknown risks, uncertainties, and other factors which may cause the actual results, performance or achievements of the Company to be materially different from any future results, performance or achievements expressed or implied by such forward-looking statements or information. Such factors include, among others, the actual prices of copper, the factual results of current exploration, development and mining activities, changes in project parameters as plans continue to be evaluated, as well as those factors disclosed in the Company’s documents filed from time to time with the securities regulators in the Provinces of British Columbia, Alberta, Saskatchewan, Manitoba, Ontario, New Brunswick, Nova Scotia, Prince Edward Island and Newfoundland and Labrador.