Orosur Mining Inc. provided an update of its exploration activities at its wholly-owned, high grade Anzá gold project (Anza) located in the Mid Cauca Belt in Colombia. Completion of preliminary geological model: Orosur has completed a preliminary geological model for the Aragon-Pastorera Trend Area (APTA) of the Anzá project, based predominantly on 17,408 m of existing diamond core drilling data from 53 holes previously drilled. 3,000 m of this core has been re-logged, with special attention given to the lithology, alteration suites, structural trends and grade distribution. Based on this information, a geological estimate of an exploratory gold potential of a portion of the APTA has been prepared with the assistance of Mine Development Associates (MDA) of Reno, Nevada. The resulting potential ranges between 1.6 M - 2.3 M tonnes averaging between 3.2 - 3.7g/t Au. This estimate is based on current drilling and is expected to grow as future exploration drilling is conducted. The company believes that the mineralized zones in the APTA continue, both at depth and at the surface, to the north and south of the limited area which has been analysed to date and included in the preliminary model. As such, there is the potential for a much larger resource base to be identified. The APTA extends 2 km along strike of the vein-like deposit; but only accounts for a small portion of the total Anzá project, which covers approximately 105 km² in total. Previous drilling of Anzá has shown consistent high grade gold intercepts over significant widths as well as coincident zinc mineralization. Anzá is situated in a well-known geological setting in Colombia already hosting a number of substantial gold projects. The Anzá project has existing mine and environmental permitting, and its existing infrastructure, including camps, roads, power and water, are in good standing. During 2017, the company plans to undertake a 15,000m - 30,000m drilling campaign to: delineate maiden resources; further define and expand the potential mineralization for APTA; test mineralization in undrilled areas of the deposit where strong indications of economic gold occurrences exist; and commence initial drilling of nearby untested and highly prospective targets. Upon completion of this drilling campaign, the company intends to prepare and publish a maiden N.I. 43-101 compliant resource report for the Anzá project. The company will update the market once the upcoming exploration programme has been designed and validated and a drilling contractor has been engaged.