Client: Rio Narcea Recursos, S.A.

Project: Rio Narcea Recursos, S.A.

Supervision: Rio Narcea Recursos, S.A.

Site: Real de la Jara, Badajoz, Spain

Start date: May 2004

Completion date: November 2005

Description:

Excavation and support of the access ramp for the Aguablanca Mine, with a development of 2 700 m, 24 m² cross-section, and declining 15 %.

The contract included also the construction of two ventilation shafts, with 2.75 m diameter and depths of 192 m and 170 m.