Trevali's Caribou Zinc-Lead-Silver Mine Restart Progressing Well and on Schedule

VANCOUVER, BRITISH COLUMBIA--(Marketwired - Sept. 18, 2014) - Trevali Mining Corporation ("Trevali" or the "Company") (TSX:TV)(OTCQX:TREVF)(LMA:TV)(FRANKFURT:4TI) would like to provide a status update on construction and mine-start activities at its wholly-owned Caribou mine and mill complex (Figure 1) located in the Bathurst Mining Camp of northeastern New Brunswick, Canada.

Both surface and underground development programs at Caribou accelerated over the summer and the project status remains well on schedule and on budget for start-up commissioning in the first half of 2015.

To view Figure 1 please click on the following link: http://media3.marketwire.com/docs/1TV0918.pdf

A summary of key current activities is provided below:

SURFACE WORKS

• The fully refurbished Main Mine Office annex is now staffed by Trevali's engineering and management team.
• Site communications are being significantly enhanced by installation of a new fibre-optic cable to the minesite, which is currently underway and scheduled to be commissioned later this year.
• The Mine Dry Facility and Change House, necessary for Underground ("UG") activities, has been refurbished.
• Site power repairs are predominantly complete.
• Improved site water management requirements have been identified and tendering is underway.

MILL

• The new 3,000-tonne-per-day Semi-Autogenous-Grinding (SAG) Mill and componentry (Figure 2) is onsite. Removal of the old SAG mill is currently underway with installation of the new SAG scheduled to be completed by early 2015.
• Key mill component spare part purchasing continues and is progressing well. Miscellaneous replacement and spare pumps, and additional equipment have been acquired from the recently closed Brunswick 12 mine complex and is onsite.
• Water supply to the mill has now been fully restored and clean-up activities are ongoing.
• Detailed mechanical, civil and electrical design for the copper recovery circuit is in progress.

To view Figure 2 please click on the following link: http://media3.marketwire.com/docs/2TV0918.pdf