ABSTRACT

Like for many mine operations around the world, vibration and air-overpressure levels generated during blasting activities are a major issue. Copelmi Mineração Ltda operates the B3 Mine, located at Butia in the southernmost state of Brazil. Blasting operations, in the near future will be as close as 100 meters from the neighboring residential area and for this reason it was decided to test different blast geometries and changes in the blast design to reduce vibration levels as much as possible and avoid complaining from the community.