MCEWEN MINING ANNOUNCES NEW PRELIMINARY ECONOMIC ASSESSMENT EXTENDING LIFE AN ADDITIONAL 10 YEARS IN MEXICO

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TORONTO, ONTARIO – (May 25, 2018) – McEwen Mining Inc. (NYSE: MUX) (TSX: MUX) (“McEwen Mining” or the “Company”) is pleased to announce results of a new Preliminary Economic Assessment (PEA) study evaluating the potential extension of production from its 100% owned El Gallo Complex in Sinaloa, Mexico. The proposed
redevelopment plan evaluated in the PEA is called Project Fenix. The key outcomes of Project Fenix include an average annual production rate of 47,000 ounces gold equivalent (AuEq), low initial capital cost, mine pay-back of 4 years, and an after-tax IRR of 25% at current gold and silver prices.

LEAGOLD REPORTS Q1 2018 EARNINGS AND AISC MARGIN OF $14.5 MILLION

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Vancouver, May 2, 2018 – Leagold Mining Corporation (TSX:LMC; OTCQX:LMCNF) (“Leagold” or the “Company”) reports Q1 2018 gold production of 51,003 ounces (oz) at its Los Filos mine at AISC of $1,039/oz and resulting in an AISC margin1 of $14.5 million. Los Filos is on track to deliver the 2018 production guidance range of 215,000 to 240,000 oz at an AISC of $875/oz to $925/oz, as the annual mine plan sequence schedules lower production and higher AISC/oz costs in H1 2018 and higher gold production with lower AISC/oz costs in H2 2018 (see Figure 1). The Q1 2018 AISC of $1,039/oz was under budget for the period. In H2 2018, the mine plan includes higher grades and lower strip ratio, and operations are also expected to benefit from improved leach pad management which includes the agglomerator and overland conveyor extension.

Americas Silver Corporation Provides Annual 2017 Production and Costs, 2018 Guidance, and an Exploration Update on Its Cosalá Operation’s Zone 120 Property

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TORONTO, ONTARIO—January 29, 2018—Americas Silver Corporation (TSX: USA) (NYSE American: USAS) (“Americas Silver” or the “Company”) is pleased to announce production and operating cost results for fiscal 2017, 2018 production and cost guidance, and results from recent follow-up exploration drilling completed on its 100%-owned Zone 120 deposit. The Zone 120 deposit is part of the Cosalá Operations property in Sinaloa, Mexico and located adjacent to the San Rafael Mine. The Company declared commercial production at the San Rafael Mine as of December 19, 2017.