Cogent Real-Time Systems Inc. Minera San Cristobal - Bolivia Using OPC DataHub to integrate expert system control Minera San Cristobal, owned by Apex Silver and Sumitomo Corporation, is one of the largest silver-zinc-lead mining projects in the world. The mine, located in the Potosi district of southwestern Bolivia, was opened in 2007, and is expected to produce approximately 450 million ounces of silver, 8 billion pounds of zinc,

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