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Underground galleries, Prison Sant Joan

Work Name: Trenching for conducting underground galleries, Prison Sant Joan de Vilatorrada 
 
Work Description: Conducting pre-cuts by Trencher for later bombing of material between the pre-cuts. 
 
Client: Ferrovial 
 
Type of terrain: sandstones, marls and red shales 
 
Features pre-cut trenches: 
  • width: 0.60 m 
  • depth: 2.70 m