TORONTO – Bunker Hill Mining Corp. (CSE: BNKR, OTC: BHLL) reported the initiation of a ground geophysical survey over the previously un-tested southern extension of its claims package.
The program, scheduled for Q3 2021, will be conducted as a high-resolution 3D IP (DCIP) survey method from Dias Geophysical Ltd utilizing their proprietary DIAS32 survey system. The total coverage area will span approximately 6 square kilometers (1,500 acres) to a depth of 400 meters (1,300 feet) over previously un-explored ground immediately south and south-west of historic underground workings, with the objective of identifying near-surface drilling targets that are directly accessible from existing works.
Sam Ash CEO stated, “The historic mine workings at Bunker Hill cover only 900 acres of the 5,800-acre land package. We are excited to be testing the portion of the property immediately to the south of these workings, which is un-explored and has the potential for the discovery of significant additional mineralization.”
The geophysics program will be constructed with lines run in a SW/NE direction, crossing perpendicular to the general orientation of prominent fault structures and zinc dominant ore bodies. The 3D nature of the survey, in combination with a common voltage referencing (data collected perpendicular to line orientation) technique, will also work to image the silver-dominant structures which have been mapped in a general NE/SW orientation.
In addition to the geophysical program, Bunker Hill geologists work to continue the digitization of scanned geologic maps specifically targeting the vein systems worked at the lower portions of the mine. A total of 7 historic mining areas, have been identified as zones where production ceased due to mine closure and remain open at depth. New geologic and sample maps have been located allowing for the complete digitization of vein structure and placement of both channel and muck car samples to generate grade estimations for in-situ mineralization. An updated mine plan will work to extend development past currently planned depths, intersecting the down-dip vein extension to bring silver-lead dominant mineralization into projected mill feed.
Bunker Hill remains one of the more shallowly developed mines in the Silver Valley and prospects of continued high-grade silver veins continuing below the bottom of current development are high. The zonation pattern of increased silver-lead ratio with depth displayed in adjacent Silver Valley mines is projected to be seen at Bunker Hill with continued down-dip development.
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