Gunnison Copper Corp.

Gunnison is a mineral exploration and development company that owns the Gunnison Copper Project, the Johnson Camp Mine, and a portfolio of exploration projects, including the Peabody Sill and the Strong and Harris deposits, in Cochise County, Arizona. The past producing Johnson Camp Mine is in Stage 2 of a process with Nuton LLC, a Rio Tinto Venture to restart the mine using Nuton technologies, with first copper expected to be produced in 2025.

Recent News

Excelsior Mining Announces Assay Results from JCM Stage 1 Drilling with Nuton, a Rio Tinto Venture

Phoenix, Arizona--(Newsfile Corp. - October 16, 2023) - Excelsior Mining Corp. (TSX: MIN) (FSE: 3XS) (OTCQB: EXMGF) ("Excelsior" or the "Company") is pleased to announce assay results at the Johnson Camp Mine (JCM) from the Stage 1 drilling with Nuton LLC ("Nuton"), a Rio Tinto venture. The program consists of drilling approximately 6,000 feet of PQ core, primarily for the purposes of further metallurgical evaluation. The samples from the drill program will be processed for mineralogy and...

2023-10-16 7:45 AM EDT

Excelsior Mining Announces Assay Results from JCM Stage 1 Drilling with Nuton, a Rio Tinto Venture

Phoenix, Arizona--(Newsfile Corp. - September 14, 2023) - Excelsior Mining Corp. (TSX: MIN) (OTCQB: EXMGF) (FSE: 3XS) ("Excelsior" or the "Company") is pleased to announce assay results at the Johnson Camp Mine (JCM) from the Stage 1 drilling with Nuton LLC ("Nuton"), a Rio Tinto venture. The program consists of drilling approximately 6,000 feet of PQ core, primarily for the purposes of further metallurgical evaluation. The samples from the drill program will be processed for mineralogy and...

2023-09-14 7:45 AM EDT

Excelsior Mining Announces Johnson Camp Stage 1 Drilling with Nuton, a Rio Tinto Venture

Phoenix, Arizona--(Newsfile Corp. - August 16, 2023) - Excelsior Mining Corp. (TSX: MIN) (FSE: 3XS) (OTCQB: EXMGF) ("Excelsior" or the "Company") is pleased to announce that it has commenced drilling at Johnson Camp with Nuton LLC ("Nuton"), a Rio Tinto venture, to further evaluate the use of its Nuton™ copper heap leaching technologies at Excelsior's Johnson Camp mine in Cochise County, Arizona. The program consists of drilling 6,000 feet of PQ core for the purposes of further metallurgical...

2023-08-16 7:45 AM EDT

Excelsior Mining Announces Option Agreement with Nuton, a Rio Tinto Venture

Phoenix, Arizona--(Newsfile Corp. - July 31, 2023) - Excelsior Mining Corp. (TSX: MIN) (FSE: 3XS) (OTCQB: EXMGF) ("Excelsior" or the "Company") is pleased to announce that it has entered into an Option Agreement (the "Agreement") with Nuton LLC, a Rio Tinto venture, to further evaluate the use of its Nuton™ copper heap leaching technologies at Excelsior's Johnson Camp mine in Cochise County, Arizona. Under the Agreement, Excelsior remains the operator and Nuton funds Excelsior's costs...

2023-07-31 7:45 AM EDT

Excelsior Mining Announces AGM Results

Phoenix, Arizona--(Newsfile Corp. - June 23, 2023) - Excelsior Mining Corp. (TSX: MIN) (FSE: 3XS) (OTCQB: EXMGF) ("Excelsior" or the "Company") reports that the nominees listed in the management information circular for the 2023 Annual General and Special Meeting of shareholders were elected as directors of Excelsior. Detailed results of the vote for the election of directors held at the Annual General and Special Meeting on June 22, 2023 in Vancouver, B.C., are set out below:

2023-06-23 7:45 AM EDT

Excelsior Mining Announces the Permit Amendment for Well Stimulation at the Gunnison Copper Mine is Now Effective

Phoenix, Arizona--(Newsfile Corp. - June 1, 2023) - Excelsior Mining Corp. (TSX: MIN) (FSE: 3XS) (OTCQB: EXMGF) ("Excelsior" or the "Company") is pleased to announce that the amended permit to the Class III Underground Injection Control ("UIC") Area Permit, that allows for well stimulation to occur at the Gunnison Copper Project, located in Cochise County, southeastern Arizona is now effective as of May 26th 2023. The amended permit was originally issued on April 21, 2023 but was not...

2023-06-01 7:30 AM EDT

Excelsior Mining Announces Receipt of Permit Amendment for Well Stimulation at the Gunnison Copper Mine

Phoenix, Arizona--(Newsfile Corp. - April 24, 2023) - Excelsior Mining Corp. (TSX: MIN) (FSE: 3XS) (OTCQB: EXMGF) ("Excelsior" or the "Company") is pleased to announce that the United States Environmental Protection Agency has issued an amendment to the Class III Underground Injection Control ("UIC") Area Permit, that will allow for well stimulation to occur at the Gunnison Copper Project, located in Cochise County, southeastern Arizona. Well stimulation has the potential to fundamentally...

2023-04-24 7:30 AM EDT

Excelsior Mining Announces Retirement of Director

Phoenix, Arizona--(Newsfile Corp. - March 31, 2023) - Excelsior Mining Corp. (TSX: MIN) (FSE: 3XS) (OTCQB: EXMGF) ("Excelsior" or the "Company") announces that long serving Board member, Lord Robin Renwick, is retiring as a director of the Company effective March 31, 2023. Lord Renwick has elected to retire for age reasons and he is concurrently retiring from his other public board of director positions. Initially appointed in 2014, Lord Renwick has provided invaluable contributions during...

2023-03-31 7:45 AM EDT

Excelsior Mining Files Technical Report for Updated Preliminary Economic Assessment on Johnson Camp Mine Incorporating Sulfide Leaching Technology

Phoenix, Arizona--(Newsfile Corp. - February 28, 2023) - Excelsior Mining Corp. (TSX: MIN) (FSE: 3XS) (OTCQB: EXMGF) ("Excelsior" or the "Company") is pleased to announce that it has filed a National Instrument ("NI") 43-101 Technical Report dated effective February 1, 2023 (the "Report") on SEDAR at www.sedar.com. The Report is with respect to the results of its Updated Preliminary Economic Assessment ("PEA") on the Johnson Camp Mine Heap Leach, located in Cochise County, southeastern...

2023-02-28 7:30 AM EST

Excelsior Mining to Present a Live-Video Webinar to Highlight the Newly Released Johnson Camp Mine PEA

Phoenix, Arizona--(Newsfile Corp. - February 22, 2023) - Excelsior Mining Corp. (TSX: MIN) (OTCQB: EXMGF) (FSE: 3XS) ("Excelsior" or the "Company") announces that Stephen Twyerould President & CEO, and Robert Winton SVP & General Manager, will be presenting a live-video webinar with Q&A on Wednesday, March 1st at 4:05 pm (EST). The event will be hosted by Amvest Capital. Those wishing to participate in the video-webinar can do so by Registering Here. CLICK HERE TO REGISTER TO THE WEBINAR...

2023-02-22 5:00 PM EST

Excelsior Mining Announces Updated Preliminary Economic Assessment on Johnson Camp Mine Incorporating Sulfide Leaching Technology

Phoenix, Arizona--(Newsfile Corp. - February 22, 2023) - Excelsior Mining Corp. (TSX: MIN) (FSE: 3XS) (OTCQB: EXMGF) ("Excelsior" or the "Company") is pleased to announce the results of its Updated Preliminary Economic Assessment ("PEA") on the Johnson Camp Mine Heap Leach, located in Cochise County, southeastern Arizona. The PEA considers the results of the drill program completed in 2022 and the implementation of sulfide leaching technology to improve recoveries. As part of the PEA, the...

2023-02-22 7:45 AM EST

Excelsior Mining Announces Closing of US$3,000,000 Financing

Phoenix, Arizona--(Newsfile Corp. - February 9, 2023) - Excelsior Mining Corp. (TSX: MIN) (FSE: 3XS) (OTCQB: EXMGF) ("Excelsior" or the "Company") is pleased to announce that today it has closed its US$3 million private placement of unsecured convertible debentures (the "Debenture Offering"). Pursuant to the Debenture Offering, investors subscribed for a total of US$3 million principal amount of convertible debentures (the "Debentures"). The terms of the Debentures include: a maturity date of...

2023-02-09 5:00 PM EST

CORRECTION FROM SOURCE: Excelsior Mining Announces Extension of Nebari Loan and US$3,000,000 Financing

Phoenix, Arizona--(Newsfile Corp. - January 30, 2023) - Excelsior Mining Corp. (TSX: MIN) (FSE: 3XS) (OTCQX: EXMGF) ("Excelsior" or the "Company") is pleased to announce that it and its wholly-owned subsidiary Excelsior Mining Arizona, Inc. ("Excelsior Arizona") has agreed with Nebari Natural Resources Credit Fund I LP ("Nebari") to extend the maturity date of its existing US$15 million credit facility to March 31, 2025. In addition, the Company has entered into agreements for a US$3 million...

2023-01-30 6:50 PM EST

Excelsior Mining Announces Extension of Nebari Loan and Us$3,000,000 Financing

Phoenix, Arizona--(Newsfile Corp. - January 30, 2023) - Excelsior Mining Corp. (TSX: MIN) (FSE: 3XS) (OTCQB: EXMGF) ("Excelsior" or the "Company") is pleased to announce that it and its wholly-owned subsidiary Excelsior Mining Arizona, Inc. ("Excelsior Arizona") has agreed with Nebari Natural Resources Credit Fund I LP ("Nebari") to extend the maturity date of its existing US$15 million credit facility to March 31, 2025. In addition, the Company has entered into agreements for a US$3 million...

2023-01-30 5:00 PM EST

Excelsior Mining Receives Approval for New Leach Pad at Johnson Camp Mine

Phoenix, Arizona--(Newsfile Corp. - January 23, 2023) - Excelsior Mining Corp. (TSX: MIN) (FSE: 3XS) (OTCQB: EXMGF) ("Excelsior" or the "Company") is pleased to announce that it has received approval from Arizona Department of Environmental Quality (ADEQ) for a new leach pad at its Johnson Camp Mine (JCM) facility. The Aquifer Protection Permit (APP) for Johnson Camp has been amended to include the construction and operation of a heap leach pad to produce copper from the legacy open pits at...

2023-01-23 7:45 AM EST

Excelsior Mining Announces Collaboration with Nuton, a Rio Tinto Venture

Phoenix, Arizona--(Newsfile Corp. - January 16, 2023) - Excelsior Mining Corp. (TSX: MIN) (FSE: 3XS) (OTCQB: EXMGF) ("Excelsior" or the "Company") is pleased to announce that it has entered into a Collaboration Agreement with Nuton LLC, a Rio Tinto venture, to evaluate the use of its Nuton™ copper heap leaching technologies at Excelsior's Johnson Camp mine in Cochise County, Arizona. Rio Tinto has developed the Nuton technologies, an extensive portfolio of advanced copper heap leaching...

2023-01-16 7:45 AM EST

Excelsior Mining Announces Passing of Board Member Jim Kolbe

Phoenix, Arizona--(Newsfile Corp. - December 5, 2022) - Excelsior Mining Corp. (TSX: MIN) (FSE: 3XS) (OTCQB: EXMGF) ("Excelsior" or the "Company") is saddened to announce the passing of Board member Mr. Jim Kolbe. Mr. Kolbe had been a director of the Company for over 10 years and he provided valuable guidance and insight during his tenure. Prior to joining the Company, Mr. Kolbe was an 11 term congressman from Arizona. "Jim Kolbe was an outstanding Congressman, public servant and citizen....

2022-12-05 4:15 PM EST

Excelsior Mining Announces Well Stimulation Modelling Results for the Gunnison Copper Project

Phoenix, Arizona--(Newsfile Corp. - October 18, 2022) - Excelsior Mining Corp. (TSX: MIN) (FSE: 3XS) (OTCQX: EXMGF) ("Excelsior" or the "Company") is pleased to announce the results of Well Stimulation modelling for the Gunnison Copper Project, located in Cochise County, southeastern Arizona. Well stimulation has the potential to fundamentally change the performance of the wellfield, reduce the need for raffinate neutralization or change the design criteria for the neutralization plant. Well...

2022-10-18 8:00 AM EDT

Excelsior Mining Announces Final Assay Results from the JCM Infill Drill Program

Phoenix, Arizona--(Newsfile Corp. - October 3, 2022) - Excelsior Mining Corp. (TSX: MIN) (FSE: 3XS) (OTCQX: EXMGF) ("Excelsior" or the "Company") is pleased to announce the final assay results from the infill drill program on the Johnson Camp mine pits (JCM) located in Cochise County, southeastern Arizona. Drill Program Due to successful drilling in the NE corner of Burro pit, additional holes were added and those with assays returned are reported below. The improved results will allow the...

2022-10-03 8:00 AM EDT

Excelsior Mining Provides Litigation Update

Phoenix, Arizona--(Newsfile Corp. - September 2, 2022) - Excelsior Mining Corp. (TSX: MIN) (FSE: 3XS) (OTCQX: EXMGF) ("Excelsior" or the "Company") announces that the British Columbia Supreme Court, in MM Fund v. Excelsior Mining Corp. 2022 BCSC 1541, a purported class action brought by MM Fund, has granted the application by Excelsior to strike MM Fund's certification application and further ordered MM Fund to remove all pleadings relating to advancing a class proceeding against Excelsior....

2022-09-02 6:00 PM EDT

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