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Bolivia

Bolivia, Villavicencio - bo/12

Highway

  Buenavista tunnel driven 4.5 km at 9 m wide in shale and sandstone using hydraulic breakers and excavators by Italian jv of Recchi and Fincosit. Umbrella drilling using Mustang A66. Large-scale use of Swellex rockbolts with holes drilled by Atlas Copco H352 Boomer. February 1997.



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