Bolañitos Mine, Mexico
(1) Gold converted to silver at a 75:1 ratio
Bolañitos is Endeavour’s second and most profitable mine, acquired in 2007 and located 10 kilometres northwest of the city of Guanajuato in the state of Guanajuato. Access is by municipal road and infrastructure includes the state power grid and local labour, supplies and services in the city of Guanajuato. The property covers approximately 2,500 hectares in the second largest historic silver mining district in Mexico.
The Bolañitos sub-district is characterized by low-sulphidation epithermal veins typically thousands of metres long, up to 250 metres deep, and ranging from one to 15 metres thick. Since acquisition Endeavour has discovered seven high-grade silver-gold ore- bodies, opened one new mine and completed three plant expansions. Today Bolañitos comprises two underground mining operations feeding a central, 1,600 tonne-per-day plant to produce bulk silver-gold concentrates, employing 400 people and 200 contractors.
In 2016, Bolañitos produced 1.0 million ounces of silver and 30,720 ounces of gold, totaling 2.8 million ounces of silver equivalents. Silver and gold production exceeded guidance due to higher throughput, partially offset by lower silver grades and gold-silver recoveries.
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