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Schematic of ANFO and cap delivery system in the IDLS (after Fisk and Peterson, 1988). (d) The Short Charge Blasting method (Figure 3) involved drilling a short hole, placing a cartridge containing an explosive in the hole, positioning a massive stemming bar in the drill hole in contact with the cartridge and detonating the explosive (Watson, 2000). It usually involved shooting holes individually. The seismic signature of this blasting method is relatively low because of the small amount of the charge. The preferable drill hole diameter was from 50-100 mm (2-4 in).
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... 1. Proposed blast design for the drift round (after Martin et al., 1989). (c) The Integrated Drill Load Shoot (IDLS) system was developed by Foster Miller, Inc. with funding from the U.S. Air Force (Figure 2). Phase I reported the feasibility of loading explosive (ANFO) and a detonator through the drilling component. Phase II involved the development and testing of the complete IDLS module, including drilling, as well as ANFO loading and automated initiation (Fisk and Peterson, 1988).
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