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Maybe this guy knows something:
http://www.linkedin.com/pub/raul-estrada-valle/26/266/138
Translation:
From age 16 I started working in the mines , as a laborer , Chauffeur, Assistant Engineer, Typographer Practical , Assistant Mining A contractor and assistant Forman of Guadalupe Mine , Silver Bell , Zacualpan Edo de Mex. Study at the School of Mines at the University of Guanajuato and at the same time I was working in the Cooperative Mining Metallurgical Santa Fe de Guanajuato, in the Office of Engineers , Mills and Cata mine , When you finish school , work at the firm. Draco , The Light in Guanajuato, where Design and built the gallows for shots Refuge and the Assumption, and then again to the Cooperative Unit As superintendent , assistant superintendent of Mines and Maintenance Superintendent , prime Mine San Ignacio . The Project Sirius, install the winch Striped opened, Deepen shot Tasting and Beneficiation Plant is renobo . After the Cia . Fresnillo in Gto. , Deepen shot Pilgrim Unit Develop Bolañitos Deepening kick to level 122 , we develop projects Golondrinas, San Ramon and La Asunción. Later in the Cuale Minado Change , In Nariceros , Minas de Oro, Socorredora . Unit open pit Mined Underground
I was in charge of A Fundidora that manufactured mining equipment. Manager Marmoleria NICSA in Leon, Gto. Manager of Minera El Carrizal , Y Minera Zimapan the Spirit . I was working on my own in various businesses of various kinds. With Minera Amajac , I was in charge of the construction of the Pilot Plant cyanidation of Cinco Minas Jalisco . I was responsible for projects Minera San Jorge . Then start the plant until failure. I was in charge of the Opening of the Silver Mine and Flotation pilot in Michoacan for owners of Minera Group Worcester Floor Goliat .
Currently I give advice to various Metallurgical Mining Miners in Jalisco , Sinaloa , Querétaro , Michoacán , etc. .
Specialties . Everything related to Mining , Exploration, drilling , Road Construction , Construction and installation of forks and winch , Deepening deTiros , Rehabilitation of Old Mines, Mining Starting and operation of construction projects everything related to Mina, and design, installation Plant operation and either flotation or cyanidation , or dynamic Loads , Heavy Media and Gravimetric . General maintenance
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