Corporate Update: Boleo Q1 2017, Manganese Non-production Decision, Chile Investment, 2016 Financial Results

VANCOUVER, BC--(Marketwired - May 01, 2017) - Camrova Resources Inc., (the "Company") (TSX VENTURE: CAV) (BAJFF) is pleased to report that Camrova management, Tom Ogryzlo (Interim CEO) and Nigel Kirkwood (CFO), attended a meeting of the Board of Directors of Minera y Metalúrgica del Boleo, S.A. P.I. de C.V. ("MMB") at site on April 21, 2017 and were presented with an update on operations for Q1 2017, including a revised mine plan for 2017. In addition, the MMB Board adopted a recommendation by MMB management and KORES not to pursue the production of manganese products at Boleo. Further details relating to the Q1 operations and the manganese non-production decision are set out below. In addition, the Company provides an update on the progress of due diligence and the definitive transaction documentation in connection with the Virginia Project in Chile. Camrova also provides highlights of its 2016 annual results and confirms receipt of the second installment of US$332,000 of the MMB management services agreement settlement.

Q1 2017 Boleo Operating Highlights

For Q1 2017, MMB management reported that operations achieved the following:

  • Copper cathode production of 3,920MT, which reflected the impact of a scheduled plant maintenance shut-down in January and also lower throughput arising from issues in the thickener and settling circuit, certain mechanical issues, including structural damage from corrosion to rakes in three of the CCD tanks which had to be repaired during the plant shut-down, and a design failure of the gearbox in one of the tailings pumps resulting in reduced spare pump availability;

  • Average copper recovery of 76%, which was lower than planned in January and February reflecting the impact of lower feed grade and decreased CCD wash water quantity due to gypsum build-up in the raffinate line that was cleared during maintenance;

  • Plant ore feeding volume of 546MT, which was adversely impacted by the throughput issues noted above;

  • Plant availability of 78.4%, which was ahead of planned availability;

  • Copper cathode sales of 3,865MT;

  • Daily copper cathode production of 55 tonnes in February and 54 tonnes in March, which are the highest achieved to date since production commenced;

  • Stablization of acid plant operations, with 100% availability in February and negligible unplanned downtime during the quarter;

  • Cobalt and zinc sulphate circuit production of 69MT and 436MT, respectively, which were below budget as optimization of the circuits continued during the quarter, including efforts to increase the availability of the iron removal circuit which is required for cobalt and zinc recovery;

  • Mining production of 544kDMT, which was lower than budgeted due to underperformance in underground mining (46% of target) resulting from incidents of unstable roof conditions and mining in the conglomerate that slowed advance and production rates. Underground production in February 2017 was less than 600 tonnes per day;

  • Surface mining production of 489kDMT, which exceeded budget due to the resumption of mining of the high-grade Purgatorio area (OC3310) and the opening of a new mining area with short haulage distance (OC3275);

  • Copper grade mined was 1.2%, which was in line with budget;

  • New semi-shields and conveyors for short-wall mining underground were purchased during the quarter. Semi-shields have been modified to extend the length of the roof support to improve safety;

  • The preparation of two additional panels in M303C and the opening of a new portal in M312A in March for short-wall mining; and

  • A revised mine plan was prepared for 2017 as described below, as result of the continuing challenges with underground mining.