Producing a longitudinal longhole retreat underground blast design.
Client: Twin Metals Minnesota
Time Span: April 2015
Twin Metals Minnesota retained RESPEC to produce production and development blast designs for the prefeasibility study of a longitudinal longhole retreat mining operation. RESPEC produced two conceptual blast designs for Twin Metals: a drop raise design and a longhole stope blast design. The technical document also included drill-and-blast parameters that allowed Twin Metals to conduct a financial evaluation.