BASE METAL OPPORTUNITY
A number of significant past-producing base-metal mines exist within TCM’s East Tintic land package. Major historic base-metal producers include the Tintic Standard, Eureka Standard, North Lily and more recent Burgin mining operations.
A significant base-metal resource is already identified at the Burgin mine, with the “Burgin Extension” reporting an Indicated and Inferred resource of 2.28M tons containing 18.5M ounces silver, 562M lb lead and 204M lb zinc, under a NI43-101 complaint resource estimate completed in 2011.
TCM are appraising the Burgin resource extension in the context of the much larger “Burgin – Ball Park” base-metal opportunity that exists, with the possible incorporation of additional high grade base-metal mineralization historically identified to the north of Burgin by Kennecott during the 1970’s. Surface drilling completed by Kennecott during this period at the Ball Park deposit intersected significant carbonate replacement lead-zinc mineralization, with broad zones up to 65ft wide reporting grades of up to 8.6 % zinc. Mineralization occurs as a large bulk tonnage, high grade, flatly dipping zone of mineralization at depths of 1,000 to 1,400 ft depth.
Prior to the closure of the Burgin mine in 1978, Kennecott had extended the 1050 level underground development over 3,000 feet northwards from Burgin towards the Ball Park zone of mineralization. This development drive followed northwards the flatly dipping and folded East Tintic thrust fault that is a so critical to the development of mineralization at the Burgin Mine. Kennecott particularly targeted the key structural intersections of the northeast trending Tintic Standard fissure faults with the earlier deformed East Tintic thrust fault. This structural model was imperative to the targeting of the Ball Park mineralized zone, with the 1050 level underground development also intersecting significant high-grade base-metal mineralization in the Zone A area located between the Burgin mine and Ball Park.
Underground drilling from the 1050 level targeting the Zone A area intersected significant base-metal mineralization up to 41ft @ 14.6% lead and 4.8% zinc in the hanging wall of the East Tintic thrust. The Zone A mineralization remains significantly under-explored, and both the Ball Park and Zone A areas present themselves as significant exploration opportunities and immediate drill targets for further resource definition and expansion. The potential for a much larger base-metal resource opportunity that encompasses the existing Burgin Extension, plus the potential resource opportunities of Zone A and Ball Park immediately to the north of Burgin are considered a very attractive target and longer term production opportunity within TCM’s land package.