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Contractors World International - 2015 Vol 6 No 3

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Mexico

Working with Putzmeister
in the Fresnillo  mine

The Fresnillo underground mine is located in the municipality in the central state of Mexico, Zacatecas, an area with rich mining resources.

This mine, located at 2.200 m above sea level, was discovered in 1554 and is the property of the mining company Fresnillo Plc, the division for precious metals of the Mexican company Peñoles since its reorganization in 2004, listed at the London stock exchange.

In the Fresnillo mine, silver and gold are being extracted primarily, and to a lesser extent lead and zinc. Its processing plant has a capacity of 8000 t per day (2.640.000 t annually). The reserves of the mine amount to 277,55 million ounces of silver, accounting for 96 % of the Peñoles group’s reserves and making it the most productive silver mine of the world. The gold reserves account for 667.000 ounces, making it the second most productive gold mine of Mexico.

Putzmeister SPM 4210 WETKRET DUAL DRIVE provides a vertical reach of 10 m pumping 20 m³/ h
Rock support with mechanized, wet-mix shotcreting

Putzmeister SPM 4210 WETKRET DUAL DRIVE provides a vertical reach of 10 m pumping 20 m³/ h

One of the contractors in charge of the exploitation of the Fresnillo mine is Diseños y Construcciones Martínez (DICOM), one of the big Latin American construction companies headquartered in Fresnillo, Zacatecas.

Being a specialist in the integral mine development process, DICOM takes care of drilling and blasting, ground support and mucking out, as well as electrical, water and ventilation installations and mine infrastructure.

Depending on the meters of advance per day and rock type, rock support in the Fresnillo mine is carried out by means of anchor bolts, wire mesh and shotcrete. DICOM applies mechanized, wet-mix shotcrete, working with Putzmeister machinery.

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