Marimaca Copper Corp News - MARI

September 15, 2014
Coro Announces Positive Conclusions from Berta Project Preliminary Economic Assessment

News Release 14-12

September 15 2014, Coro Mining Corp. ("Coro" or the "Company") (TSX Symbol: COP) is pleased to announce the conclusions from the Berta copper project ("the Project") National Instrument 43-101 Technical Report ("the Report") being finalized by independent consultants Geoinvestments SpA ("Geoinvestments") of Santiago, Chile. The Project is located in the III Region of Chile and is owned by SCM Berta ("SCMB") a Chilean company whose shareholders are Coro and ProPipe SA ("ProPipe"), an engineering firm based in Santiago, Chile.

As announced in the Company's news release NR14-10 on September 3 2014, SCMB and Inmobiliaria y Constructora Fundart Ltda ("Fundart"), a local construction group, have executed a Memorandum of Understanding ("MOU") which provides $15m of debt financing for the development of the Berta copper resource, located approximately 20km west of the village of Inca de Oro and for the acquisition of the Nora solvent extraction and electro winning ("SXEW") plant, located 4km north of the town of Diego de Almagro and 42km north of Berta.

The shareholder's agreement between ProPipe and Coro has been executed, and ProPipe's interest in SCMB will increase to 18% with the completion of the Preliminary Economic Assessment ("PEA"). Successful completion of the debt financing and planned acquisition of the Nora plant will further increase this to 50%.

The Report is based on the outcomes of an engineering study completed by Geoinvestments to PEA study standards. The Report includes the resources, open pit mine plan, operating and capital costs and financial analysis for the Project which contemplates the production of an average of 4.8ktpy of copper cathode for a period of 8 years. The Report was prepared in conjunction with the Berta NI 43-101 resource estimate completed by Geoinvestments, as announced in the Company's news release NR13-07 on August 7 2013, and which is available for review on SEDAR at www.sedar.com. All references to $ in this News Release are references to US$.

Conclusions
In pit Measured and Indicated Resources of 17.6mt at 0.37%CuT at a cutoff grade of 0.1%CuT, equivalent to 64kt of contained copper
Open Pit Mine Plan for total copper production of 38.3kt of copper cathode
Mine Life of 8 years
Average production rate of 900ktpy heap leach material plus 830ktpy dump leach material
Base Case copper price of $3.00/lb
Average life of mine cash operating costs of $2.03/lb Cu
Initial capital costs of $15m, including $6.25m fixed fee contract for the Nora plant purchase and expansion, $7m fixed fee contract for the Berta crushing circuit and leach pads construction, and $1.75m of project loan
Base Case pre-tax NPV (8%) of $34.3m with an IRR of 55.2%.
Base Case after tax NPV (8%) of $26.6m with an IRR of 46.9%.
Disclosure and Risks

SCMB was recently presented with the opportunity of acquiring the Nora plant from receivership at a favourable price, which would give SCMB the ability to achieve production earlier than otherwise possible, and with a significantly reduced execution risk and cost. In addition, SCMB was offered a100% debt financing from Fundart including fixed fee, Build-Operate-Transfer ("BOT") contracts for the acquisition of the Nora plant, and for the installation of a crushing circuit and leach pads at Berta. The debt facility would be for a repayable over a period of 5 years commencing with the production of first cathode, with a one year grace period, and would carry interest at 3% over the bank rate charged to Fundart. The Berta crushing circuit and the Nora plant would be owned and operated by Fundart until the debts have been fully paid, at which time ownership would be transferred to SCMB. Fundart would be reimbursed on a cost +10% basis for the provision of labour, spare parts and maintenance during this debt repayment period. The debt facility is anticipated to provide all of the funds required for the Berta/Nora project to produce up to 5ktpy Cu, is non-recourse to Coro and requires no equity contribution from Coro. SCMB elected to accept this financing proposal, has signed an MOU and the financing and plant purchase are expected to close on or before October 22 2014.

Subject to successful completion of this financing, SCMB will have substantially reduced the risks associated with the construction of the Project.

The opportunity to acquire the plant and accept the financing occurred while SCMB was finalizing a PEA for the Project and this has been modified to incorporate the proposed plant acquisition and revised capital and operating costs. There has been insufficient time to complete more detailed engineering studies and so the normal progression from PEA to Preliminary Feasibility Study to Feasibility Study has not been followed. Therefore, investors are cautioned that no mineral reserves have been declared and the level of confidence in the resources, metallurgy, engineering and cost estimation is not at a level normally associated with a project reaching a production decision. This may result in the production rates, copper recoveries and operating costs stated in this PEA not being realized.

Geoinvestment's assessments are preliminary in nature, mineral resources are not mineral reserves and do not have demonstrated economic viability, and there is no assurance the preliminary assessments will be realized. The outcome of this PEA may be materially affected by the closing of the financing, copper pricing, environmental, permitting, legal, title, taxation, socio-political, marketing, or other relevant issues. Inferred mineral resources are considered too speculative geologically to have economic considerations applied to them that enable them to be categorized as mineral reserves.

Mineral Resources

The resource estimate includes the Berta Sur deposit, and the Berta Central deposits which comprise 5 individual but adjacent deposits which have been subject to prior small scale open pit mining. The resource estimate was completed by Geoinvestments at a variety of total copper ("%CuT") grades, as shown on Table 1, below.

Table 1: Resource Estimate
Berta Project Resource Estimate
Zone Cutoff Measured Indicated Measured & Indicated Inferred
kt % CuT % CuS kt % CuT % CuS kt % CuT % CuS kt % CuT % CuS
Berta Sur & Central 0.10 16,498 0.34 0.23 8,653 0.23 0.14 25,150 0.30 0.20 4,845 0.24 0.15
0.15 13,275 0.39 0.27 5,780 0.27 0.18 19,055 0.36 0.24 3,249 0.30 0.20
0.20 10,487 0.45 0.31 3,336 0.35 0.23 13,822 0.43 0.29 2,039 0.38 0.25
0.25 8,355 0.51 0.36 1,961 0.44 0.30 10,316 0.50 0.35 1,402 0.45 0.31
0.30 6,791 0.56 0.40 1,289 0.52 0.36 8,080 0.56 0.39 932 0.53 0.37

Berta Sur 0.10 10,972 0.32 0.21 4,423 0.18 0.11 15,394 0.28 0.18 2,105 0.18 0.11
0.15 8,853 0.37 0.25 2,800 0.21 0.13 11,653 0.33 0.22 1,296 0.22 0.13
0.20 6,892 0.42 0.29 1,332 0.26 0.16 8,225 0.39 0.27 720 0.26 0.16
0.25 5,385 0.47 0.33 561 0.31 0.20 5,946 0.46 0.32 343 0.29 0.18
0.30 4,288 0.53 0.37 261 0.36 0.24 4,549 0.52 0.36 127 0.33 0.21

Berta Central 0.10 5,526 0.38 0.26 4,230 0.27 0.17 9,756 0.33 0.22 2,740 0.29 0.19
0.15 4,422 0.45 0.31 2,980 0.33 0.22 7,402 0.40 0.27 1,953 0.35 0.24
0.20 3,594 0.51 0.36 2,003 0.41 0.27 5,598 0.47 0.33 1,318 0.44 0.30
0.25 2,969 0.57 0.40 1,401 0.49 0.34 4,370 0.55 0.38 1,059 0.50 0.34
0.30 2,503 0.63 0.45 1,028 0.56 0.39 3,531 0.61 0.43 805 0.57 0.40

In order to demonstrate the potential economic viability of the Berta Sur and Central resources, a series of pit optimizations using the Lersch & Grossmann algorithm was completed utilizing appropriate operating costs, results obtained from metallurgical test work, and a variety of copper prices. For a $3.00/lb copper price, the optimum pits were determined to contain 17.6mt at an average grade of 0.37%CuT and an overall stripping ratio of 0.49:1, as detailed in Table 2, below.

Table 2: In-Pit Resource Estimate based on $3/lb Cu, 0.1%CuT cutoff
Berta Project In Pit Resource
Zone Pit Measured Indicated Measured & Indicated Waste Strip
kt % CuT % CuS kt % CuT % CuS kt % CuT % CuS kt Ratio
Berta Sur Berta Sur 8,929 0.35 0.23 1,427 0.19 0.11 10,356 0.33 0.21 2,609 0.25
Berta Central Trinchera-Salvadora 2,242 0.48 0.30 527 0.47 0.29 2,769 0.48 0.30 2,499 0.90
Carmen-Gemela 982 0.51 0.36 562 0.38 0.26 1,544 0.47 0.32 1,852 1.20
Nueva 219 0.43 0.29 295 0.34 0.22 514 0.38 0.25 375 0.73
Berta II 853 0.37 0.24 150 0.36 0.23 1,003 0.37 0.24 572 0.57
Chico 900 0.30 0.18 518 0.25 0.14 1,418 0.29 0.17 762 0.54
Berta Sur & Central Total 14,125 0.38 0.25 3,479 0.29 0.18 17,604 0.37 0.23 8,669 0.49

Mining, Processing and Production Plan
The Project contemplates an open pit mine to extract oxide material from the Berta Sur and Central deposits using mining contractors, followed by crushing, agglomeration and heap leaching of higher grade (>0.3%CuT) material and dump leaching of lower grade (0.1-0.3%CuT) material. The resulting pregnant leach solution ("PLS") would then be transported by tanker 60km on existing roads to the Nora SXEW plant for recovery of copper cathode. Water and raffinate would be returned by tanker from Nora to Berta. Overall material contained in the mine plan developed by Geoinvestments has 7.22mt of heap leach material, with an average grade of 0.57% CuT and 6.63mt of dump leach material with an average grade of 0.20%CuT.

A total of twelve 2m column tests have been completed on material from Berta Sur at Geomet SA and three 2m columns from Berta Central material at the Hydrometallurgy Laboratory of the University of Santiago de Chile, and this testwork was used to estimate recoveries of 78% of total copper for the heap leach and 45% of total copper for the dump leach material.

The Berta mine plan & cathode production schedule is shown on Table 3, below;

Table 3: Berta Mine Plan
Berta Mine Plan Year Total
1 2 3 4 5 6 7 8
Heap Leach Mined, kt 992 978 942 958 921 626 985 821 7,223
CuT% 0.50 0.50 0.56 0.57 0.57 0.92 0.59 0.50 0.57
CuS% 0.35 0.36 0.39 0.41 0.40 0.65 0.42 0.36 0.41
Recovery, % 78 78 78 78 78 78 78 78 78
Cathode, kt 3.9 3.9 4.1 4.3 4.1 4.5 4.5 3.2 32.4
Dump Leach Mined, kt 1,187 1,219 935 688 873 520 428 782 6,632
CuT% 0.20 0.20 0.20 0.21 0.19 0.19 0.21 0.20 0.20
CuS% 0.12 0.12 0.12 0.13 0.11 0.11 0.13 0.12 0.12
Recovery, % 45 45 45 45 45 45 45 45 45
Cathode, kt 1.1 1.1 0.9 0.7 0.7 0.4 0.4 0.7 6.0
Waste Strip Ratio 0.43 0.16 0.10 0.06 1.16 1.62 0.72 0.41 0.52
Waste, kt 933 360 187 103 2,081 1,857 1,012 653 7,186
Total Mined, kt 3,112 2,557 2,064 1,749 3,875 3,003 2,425 2,256 21,041
Cathode, kt 4.9 5.0 4.9 5.0 4.8 4.9 4.9 3.9 38.3

Operating Costs

Operating cost estimates reflect the current market environment in northern Chile for contract mining, crushing, sulphuric acid, power supply, cathode production by SXEW, and transportation of PLS and water, and are shown on Table 4, below.
Major operating cost components are sulphuric acid at $105/t, water at $0.25/m3 and power at $280/MW for Berta (generators) and $150/MW for Nora (connected to grid).

Table 4: Life of Mine Operating Costs
Life of Mine Operating Cost LOM $m LOM $/lb
Mining $51.4 $0.61
Processing $92.9 $1.10
PLS Transport $19.9 $0.24
G&A $7.4 $0.09
Cash Cost C1 $171.7 $2.03

Capital Costs

SCMB is in the process of closing the acquisition of the Nora plant and obtaining $15m of debt financing, on or before October 22 2014 to complete the following capital expenditures;
Nora Plant Purchase and Expansion; $6.25m fixed fee BOT contract to cover the purchase price and the expansion from 3,000tpy to 5,000tpy copper cathode of the SXEW circuit
Berta Crushing Circuit and Pads construction; $7m fixed fee BOT contract to cover the installation of a 1mtpy crusher and agglomerator, heap and dump leach pads, and associated piping, ponds, electrics and infrastructure
A project loan; $1.75m, including $0.25m which has been advanced as an option payment to the Berta claim owner
Pre- Financing Financial Analysis

The Project has been evaluated on both a pre-tax basis and after all Chilean taxes and a 1.5% royalty due to the Berta claim owner at a base case copper price of $3.00/lb and for sensitivity, at prices of $3.30/lb and $2.70/lb as shown on Table 5.

Table 5: Berta Economic Evaluation Summary
Cu Price $3.30/lb $3.00/lb $2.70/lb
NPV Pre tax After tax Pre tax After tax Pre tax After tax
5% $60.8 $48.0 $41.5 $32.6 $22.2 $17.1
8% $51.0 $40.0 $34.3 $26.6 $17.6 $13.2
10% $45.5 $35.5 $30.2 $23.3 $14.9 $11.0
IRR 75.8% 64.0% 55.2% 46.9% 33.7% 28.8%

Project Upsides

The spent ore stockpile from the previous period of plant operation at Nora contains potentially recoverable copper and SCMB has also identified some potentially available dump material within trucking distance of the plant, both of which will be evaluated as feed for the plant in early 2015 while Berta is being developed. However, this economic evaluation assumes that there will be no copper production at the Nora plant until the Berta facilities have been installed.
SCMB will also evaluate alternatives to trucking water, raffinate and PLS between Nora and Berta, including installing a pipeline between them.

Berta NI43-101 Technical Report

Geoinvestments managed the preparation of the Report which will be completed and filed on SEDAR and Coro's web site within 45 days of this release. All principal technical personnel and Qualified Persons ("QP") participating in the development and review of this Report have extensive relevant experience.

The QP responsible for the independent resource estimate at Berta was Sergio Alvarado, a consultant geologist with more than 27 years of experience and general manager and partner of Geoinvestments SpA. He is a member of CIM, the Chilean Mining Commission, and the Instituto de Ingenieros de Minas de Chile. The information that relates to geology, mineralization, drilling, and mineral resource estimates on the Berta deposit, is based on information prepared under the supervision of, or has been reviewed by Sergio Rivera, Vice President of Exploration, Coro Mining Corp, a geologist with more than 30 years of experience and a member of the Colegio de Geologos de Chile and of the Instituto de Ingenieros de Minas de Chile and a QP. Jaime Simpson, a metallurgical engineer with more than 25 years of experience and employed by ProPipe as Development and Research Manager, was responsible for supervising the metallurgical test work and estimated the copper recoveries. Victor Araya, a civil mechanical engineer with over 15 years of experience in project development and management, and a board member of ProPipe and partner companies, was responsible for the engineering design and capital cost estimates. Oscar Rosas, a metallurgical engineer with more than 27 years of experience and General Manager of SCM Berta was responsible for the operating cost estimates and the financial analysis reported herein. Sergio Alvarado was responsible for the overall compilation of the PEA Study, is the QP for purposes of National Instrument 43-101, and has approved the Information contained in this News Release. Alan Stephens FIMMM, President and CEO of Coro, a geologist with more than 39 years of industry experience is the QP for Coro who has reviewed and approved the contents of this News Release.

The technical information has been included herein with the consent and prior review of the above noted QPs, who have verified the data disclosed, including sampling, analytical and test data underlying the information or opinions contained herein.

All mineral resources have been estimated in accordance with the definition standards on mineral resources and mineral reserves of the Canadian Institute of Mining, Metallurgy and Petroleum ("CIM") referred to in National Instrument 43-101, commonly referred to as NI 43-101. U.S. reporting requirements for disclosure of mineral properties are governed by the United States Securities and Exchange Commission ("SEC") Industry Guide 7. Canadian and Guide 7 standards are substantially different. This News Release uses the terms "measured," "indicated" and "inferred" resources. We advise investors that while those terms are recognized and required by Canadian regulations, the SEC does not recognize them. Mineral resources which are not mineral reserves do not have demonstrated economic viability.

About Fundart
Fundart is a Chilean construction group formed in 1996 by the architect Patricio Rodriguez Bass. Since then, it has completed over 400 construction projects with a total of 700,000 square metres built in a variety of works throughout Chile. The principal areas of activities include the construction of apartment buildings, housing and retail complexes, and commercial buildings as well as development and construction projects in the copper mining industry. Fundart employs 40 professional staff and has a workforce of more than 700 who have been well trained to implement the latest generation of construction technology and processes.

About ProPipe
ProPipe is a Chilean supplier of consultancy, engineering and project management services to its customers in the mining process, infrastructure and environment markets. ProPipe have relevant experience in conceptual and basic design, preliminary feasibility and feasibilities studies, and detailed engineering for mining companies in Chile. Some of its principal clients are BHP Billiton (Minera Escondida), Antofagasta Minerals (Minera Los Pelambres, Minera El Tesoro, and Minera Esperanza), Minera Las Cenizas and Algorta Norte. ProPipe's recent projects include the Camarones 7,000tpy copper cathode plant, the Algorta Norte 78 km sea water pipeline, and Minera Escondida's Coloso filter plant expansion project.

About Coro
Coro's strategy is to grow a mining business through the discovery, development and operation of "Coro type" deposits. These are defined as projects at whatever stage of development, that are well located with respect to infrastructure and water, which have low permitting risk, 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. Coro's properties include the Berta pre-production project, the Planta Prat copper development project, the Celeste Sur iron ore project and the Marimaca & Llancahue copper exploration prospects, all located in Chile. The advanced San Jorge copper-gold project located in Argentina has been optioned to Aterra Capital and Solway Industries.

CORO MINING CORP.

"Alan Stephens"
Alan Stephens
President and CEO

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 investor.info@coromining.com

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 the proposed financing, construction and operation of the Berta project including the acquisition and operation of the Nora plant, metal prices, metallurgical results and resource estimates, 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 price of copper, the factual results of current and future 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.

September 03, 2014
Coro Announces Debt Financing And Acquisition Of Processing Plant For Development Of The Berta Project

September 3 2014, Coro Mining Corp. ("Coro" or the "Company") (TSX Symbol: COP) is pleased to announce that its subsidiary, SCM Berta S.A. ("SCMB") and Inmobiliaria y Constructora Fundart Ltda ("Fundart"), a local construction group, have executed a Memorandum of Understanding ("MOU") which provides US$15m of debt financing for the development of the Berta copper leach project, located approximately 20km west of the village of Inca de Oro, in the III Region of Chile. SCMB has also agreed to acquire the Nora SXEW processing plant, located 4km north of the town of Diego de Almagro and 42km north of Berta, from a local company in administration for 2.5 billion Chilean pesos (approximately US$4.5m). The locations of Berta and Nora are shown on Figure 1.

Alan Stephens, President and CEO of Coro commented, "We are delighted that SCMB has obtained this debt facility and is acquiring the Nora plant on favourable terms. Successful completion of the development of Berta and expansion of Nora will result in Coro achieving its founding corporate objective of becoming a producing mining company. We look forward to completing the acquisition of the Nora plant and the finalization of the loan documentation in October and to initiating the ramp up of copper cathode production in early 2015. "

Background
SCM Berta has been in discussions with the owners of a third party SXEW plant with a view to selling pregnant leach solution ("PLS") to them. The opportunity recently arose to purchase the existing Nora SXEW plant at a good price from a company in administration and so enable SCM Berta to produce copper cathode directly without being tied to a third party for PLS treatment or water supply. SCMB intends to expand the SXEW circuit of the Nora plant from 3ktpy to 5ktpy copper cathode and install a crushing circuit and leach pads at Berta. Longer term, the establishment of leach pads at Berta and Nora will provide the scalability for SCMB to identify additional leachable resources within trucking distance of both and thereby extend the life of the operation or expand it. No modification will be required to the existing Environmental Impact Declaration for Berta which is anticipated to be granted shortly, and the Nora plant is fully permitted.

Debt Financing and Plant Purchase
The Nora plant purchase was secured by a bank guarantee of 5% of the purchase price paid on August 29 2014, with the balance payable on or before October 22 2014.

The debt financing, which totals US$15m, will be structured as follows;
Nora Plant Purchase and Expansion; US$6.25m fixed fee Build-Operate-Transfer ("BOT") contract to cover the purchase price and the expansion from 3ktpy to 5ktpy copper cathode of the SXEW circuit
Berta Crushing Circuit and Pads construction; US$7m fixed fee BOT contract to cover the installation of a 1mtpy crusher and agglomerator, heap and dump leach pads, and associated piping, ponds, electrics and infrastructure
A project loan; US$1.75m
The US$15m debt facility will be repayable over a period of 5 years commencing with the production of first cathode, with a one year grace period, and will carry interest at 3% over the bank rate charged to Fundart
The Berta Crushing Circuit and the Nora Plant will be owned and operated by Fundart until the debts have been fully paid, at which time ownership will be transferred to SCMB. Fundart will be reimbursed on a cost +10% basis for the provision of labour, spare parts and maintenance during this debt repayment period.
This debt facility is anticipated to provide all of the funds required for the Berta/Nora project to produce 5ktpy Cu and is non-recourse to Coro
Preliminary Economic Assessment
A Preliminary Economic Assessment ("PEA") for the combined Berta/Nora project is being finalized by ProPipe SA ("ProPipe"), which currently owns 13% of SCMB, and will be released shortly. Completion of this PEA will increase ProPipe's interest to 18% in SCMB and successful completion of the debt financing and plant purchase will further increase this to 50%. ProPipe will be Operators of SCMB. The PEA is based on the trucking of water from Nora to Berta and PLS to Nora; consideration will be given to permitting and installing a PLS pipeline in the future.

About Nora
The Nora plant was built in 2009 and comprises a 750ktpy crushing circuit and a 3ktpy SXEW plant with associated heap leach pads, spent ore stockpiles, piping, PLS ponds etc., together with certain mining properties and surface rights. SCMB is acquiring all of these physical assets, which have been maintained in good condition since 2013 when the plant closed, free of debts, liabilities and liens. The plant is fully permitted and these permits will be transferred to Fundart prior to closing on or before October 22 2014. SCMB will enter into new water supply contracts with the previous suppliers to the plant. The spent ore stockpile from the previous period of operation contains potentially recoverable copper and SCMB has also identified some dump material within trucking distance of the plant, both of which will be evaluated as potential feed for the plant in early 2015 while Berta is being developed. Nora is located in an emerging district of major IOCG copper projects, approximately 11km from Capstone's Santo Domingo Cu-Fe-Au flotation project and 10km from Copec's Diego de Almagro Cu leach + Cu-Au flotation project, both of which are in the permitting stage.

About Berta
Berta is a near surface, copper oxide deposit, with mineralization, as defined by drilling, mapping and geochemistry, occurring in three principal areas; Berta Sur, Berta Central and Berta Norte. It is associated with sub-vertical, elongate, porphyry intrusive bodies and related hydrothermal and intrusive breccias, emplaced into a tonalite stock. Oxidation extends from surface to depths of 50m to 100m. Berta Sur comprises a single, coherent body of mineralization that has not been previously mined, while Berta Central comprises several smaller breccia bodies, located immediately north of Berta Sur, which were the focus for previous small scale artisanal copper oxide production. A resource estimate has been completed for Berta Sur and Central. Berta Norte comprises several, discreet, NW oriented zones of mineralization, largely gravel-covered, and potential for additional copper oxide resources is present elsewhere on the property and in the surrounding district.

Coro announced an initial NI43-101 compliant resource estimate for Berta Sur, in its news release dated December 6th 2012 and the results of preliminary metallurgical test work in its news release dated November 5 2012. On May 8 2013, the Company announced that it had signed a Letter of Intent ("LOI") with ProPipe an engineering firm based in Santiago, Chile giving ProPipe the right to earn up to a 50% interest in the Berta property by funding the further development of the project. On August 7 2013, Coro announced an increased resource estimate for Berta together with the results of additional metallurgical test work. The shareholder's agreement for SCM Berta, owned by subsidiaries of Coro and ProPipe, is being finalized.

About Fundart
Fundart is a Chilean construction group formed in 1996 by the architect Patricio Rodriguez Bass. Since then, it has completed over 400 construction projects with a total of 700,000 square metres built in a variety of works throughout Chile. The principal areas of activities include the construction of apartment buildings, housing and retail complexes, and commercial buildings as well as development and construction projects in the copper mining industry. Fundart employs 40 professional staff and has a workforce of more than 700 who have been well trained to implement the latest generation of construction technology and processes.

About ProPipe
ProPipe is a Chilean supplier of consultancy, engineering and project management services to its customers in the mining process, infrastructure and environment markets. ProPipe have relevant experience in conceptual and basic design, preliminary feasibility and feasibilities studies, and detailed engineering for mining companies in Chile. Some of its principal clients are BHP Billiton (Minera Escondida), Antofagasta Minerals (Minera Los Pelambres, Minera El Tesoro, and Minera Esperanza), Minera Las Cenizas and Algorta Norte. ProPipe's recent projects include the Camarones 7ktpy copper cathode plant, the Algorta Norte 78 km sea water pipeline, and Minera Escondida's Coloso filter plant expansion project.

About Coro
Coro's strategy is to grow a mining business through the discovery, development and operation of "Coro type" deposits. These are defined as projects at whatever stage of development, that are well located with respect to infrastructure and water, which have low permitting risk, 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. Coro's properties include the Berta copper development project, the Planta Prat copper development project, the Celeste Sur iron ore project and the Marimaca & Llancahue copper exploration prospects, all located in Chile. The advanced San Jorge copper-gold project located in Argentina has been optioned to Aterra Capital and Solway Industries.

Alan Stephens, FIMMM, President and CEO, of Coro Mining Corp, a geologist with more than 39 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

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 investor.info@coromining.com

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 metal prices, metallurgical results and resource estimates, 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, closing of the acquisition of the Nora plant and the accompanying debt facility as described in this news release, 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.

Figure 1; Location of Berta and Nora

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Marimaca Copper Announces C$68 Million Strategic Investment by Assore International Holdings (AIH) Including Private Placements Totaling C$30.3 Million led by AIH

Marimaca Announces Channel Sample Results from Mercedes Satellite Target

Marimaca Announces Results From Annual General Meeting

Marimaca Hosts Mejillones Open House; Achieves “A” Rating in 2023 Digbee Sustainability Assessment and Provides Corporate Update

Marimaca Copper Project Development and Exploration Update

Marimaca to Present at the BMO 2024 Global Metals, Mining and Critical Minerals Conference – Live Webinar

Marimaca Announces 2024 Regional Exploration Strategy – Sierra de Medina

Marimaca Appoints Solange González as General Counsel and Corporate Secretary

Marimaca Announces GC and CSO Transition

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