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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:...
About this update from Gunnison Copper Corp.
[{"type":"text","content":"Excelsior Mining Files Technical Report for Updated Preliminary Economic Assessment on Johnson Camp Mine Incorporating Sulfide Leaching TechnologyPhoenix, 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 Arizona that were originally announced in a February 22, 2023 news release. 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 Report also includes a republishing of the Prefeasibility Study Update (\"PFS\") on the North Star Deposit of the Gunnison Copper Project. The Gunnison Project is designed as a copper in-situ recovery (\"ISR\") mine using solvent extraction-electrowinning (\"SX-EW\") to produce copper cathode and the Johnson Camp mine is a conventional open pit and heap leach operation. Results of the PFS and PEA disclosed in this press release are in United States dollars.\"The potential of sulfide leaching technology is transformational for Johnson Camp's economics and total mineable copper, which has prompted us to take a more holistic view of the development of the entire mining camp, including oxides, sulfides and transition mineralization at all our assets,\" comments Stephen Twyerould, President and CEO. \"For Gunnison, we are awaiting the permit amendment for well stimulation, which we hope to receive this quarter. Once all approvals are in-hand, we intend to start field trials as soon as possible thereafter. Field trails are designed to test whether well stimulation is the preferred method to reduce or eliminate the negative effects of gas bubbles on injection flow within the wellfield.\" JOHNSON CAMP HEAP LEACH PRELIMINARY ECONOMIC ASSESSMENTEconomic AnalysisThe Johnson Camp Mine (\"JCM\") has historically been an open pit, heap leach operation since Cyprus Minerals opened the property in the 1970's. The operation includes two open pits, a two-stage crushing-a...