... Silver Mine in Zacatecas, Mexico reached phase one commercial production on April 1, 2013. Phase one of mill construction consists of a 1,000 tpd flotation circuit producing both silver-lead and zinc concentrates. Mill throughput since April 1, 2013 ...
http://www.wirenews.co/global/mining-metals/10163/irw-press-first-majestic-silver-del-toro-silver-mine-flotation-circuit-deemed-commercial
http://www.wirenews.co/global/mining-metals/10163/irw-press-first-majestic-silver-del-toro-silver-mine-flotation-circuit-deemed-commercial
