Shafts Collars

Burkina Faso

Executed Services


  • Clients develops a new underground gold mine
  • Construction of secant pile walls in overburden for raise boring of ventilation  shafts
  • Drilling and installation of starter section for mine rescue shaft

Characteristics / Technical Data


  • Pile diameter 880 mm to 28 m in depth
  • Mine rescue shaft with 1180 mm liner


Rigs:  BAUER BG20H