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Sierra Madre President, CEO & Director Alex Langer and COO & Executive Chairman Greg Liller discuss the first project-wide Resource Estimate for the La Guitarra silver-gold mine and the Temascaltepec mining district in Estado de Mexico. Hosted by Deborah Honig. @sierramadregs
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Major Drilling Group International Inc. is one of the world’s largest drilling services companies primarily serving the mining industry. Established in 1980, Major Drilling has over 1,000 years of combined experience and expertise within its management team alone.