3 PRACTICAL EXERCISEDesign a delayed initiation blast (would like to shoot a minimum of 10 holes per delay). Base the plan on the following:Rock - limestone, in thin layersw/tight jointsBench height - 24 ft
4 PRACTICAL EXERCISEExplosive - bulk ANFO, SGe 0.8 dry holes, no liner required.Explosive - dynamite, SGe 1.4 Cartridge size: 2 to 3.5 inch diameter in ¼ in. increments, by 16 in. long.
5 PRACTICAL EXERCISEDrills can use 6 in. bits.Regulatory scale distance factor 55Nearest structure is 1,400 ft away