Esperanza Mine

Project Information: The work involves the execution of the project and the excavation and support of a 71 m mine tunnel under a coarse ore stockpile.

Country: Chile

Province: Antofagasta Region

Place: Sierra Gorda Town


  • Cross section: 17 m²
  • Lenght: 71 m

Overburden: Low

Method of Tunneling:

  • NATM. Mechanical excavation

Geology and Geotechnical Data:

  • Silty gravels with sands

Tunnel Equipment:

  • Atlas Copco two-boom jumbo
  • Loaders