Trevali Mining Reports Underground Development in the Santander Mine in Peru

Trevali Mining Corporation (TSX:TV,OTCQX:TREVF,FWB:4TI) reported progress on underground development as well as initial grade comparison results from the Magistral North and Central Deposits at the Santander Mine in Peru. Eight levels are in place in addition to 12 sub-levels in the Magistral North and Central deposits, four levels – 7 sub-levels and four levels and 5 sub-levels respectively.

As quoted in the press release:

UNDERGROUND DEVELOPMENT

All three Magistral deposits (North, Central and South) are accessed by individual production ramps. The North and Central deposits are connected and break-through from Central to South deposits is anticipated in Q3. This will allow implementation of one-way, high-speed, trackless mining system in addition to enabling greater flexibility for mining planning, scheduling and extraction purposes. It should also greatly reduce the potential for underground bottlenecks for Mill feed. Once this is in place, 2013 development will be largely complete and the joint Trevali-Glencore-JRC mining team will re-focus on long-range mine planning and commence driving 2014 development.

With substantial development now complete the underground team is currently implementing a variety of optimization initiatives focusing on personnel skills, operating procedures, enhanced mining and mucking procedures and a proactive ‘pit-stop’-style fleet maintenance program.

MAGISTRAL GRADE COMPARISON STUDIES

Initial underground grade comparison studies of mined development material – to underground channel samples – to the NI 43-101 resource estimate is encouraging – the data is essentially within natural geological error (Table 1).

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