Issue link: http://resourceworld.uberflip.com/i/855838
A U G U S T / S E P T E M B E R 2 0 1 7 www.resourceworld.com 63 MINING SILVER BULL RESOURCES INC. [SVB- TSX; SVBL-OTCQB] plans to begin a drilling program shortly, on its 100%- owned Sierra Mojada property 150 km north of Torreon, Coalhuila State, north- east Mexico. The property is a past producer of zinc and silver, but also hosts significant quantities of lead and copper. The Sierra Mojada district was discovered in 1879 and high-grade ores were intermit- tently mined underground via three shafts until 1990. Of note, miners targeted high- grade (+25% zinc and +500g/t silver) and silver and zinc that was direct-shipped to smelters. There was no mill. More recent operators have explored the extensions and halos of the previ- ously mined mineralization. Two separate and distinct high-grade zones, one of zinc (called the Zinc Zone) and one of silver (called the Silver Zone) are contained within a larger global NI 43-101 compliant measured and indicated resource of 58.7 million tonnes grading 3.6% zinc and 50 g/t silver for 4.670 billion pounds of zinc and 90.8 million ounce of silver. All the mineralization defined to date is oxide. The resource within the discreet, high-grade zones of the silver and zinc mineralization include: a measured and indicated resource in the Zinc Zone of 10.03 million tonnes averaging 11% zinc at a 6% cut-off for 2.426 billion pounds of zinc, and a measured and indicated resource in the Silver Zone of 19 million tonnes aver- aging 102.5 g/t at a 50 g/t cut-off for 62.6 million ounces of silver. Sierra Mojada is a carbonate replace- ment deposit hosted in dolomite (~80%) and limestone (~20%), a style of mineral- ization that is common in Northern Mexico and accounts for approximately 40% of Mexico's past silver production and 70% of its past zinc and lead production. The mineralization at Sierra Mojada is seen as a continuous manto (blanket-shaped) ore body with an approximate strike length of 3.5 km, up to 200 metres wide and up to 60 metres thick that dips shallowly east and remains open. Over the past 18 years, over US $50 mil- lion has been spent by other operators on exploration and development. The upcoming 5,000-metre drill pro- gram is budgeted at US $700,000 with the objective of targeting sulphide feeder zones. Unlike many underground mines, most of the Sierra Mojada workings are dry, enabling geological mapping and underground drilling operations to proceed. Metallurgical studies have been com- pleted with favourable metal recoveries for both the high-grade silver (leaching) and the high-grade zinc (Waelz Kiln). The 200 km 2 property is accessible by paved road, the company owns five water wells and there is a natural gas line nearby as well as a railway. Employees can live in local towns in this historic mining region. Silver Bull Resources, headed by Tim Barry, President and CEO, has about 193 million shares outstanding. n Silver Bull to drill former Mexican zinc producer by Ellsworth Dickson www.resourceworld.com