DRILLING AND BLASTING

• TONNAGE BLASTED EACH DAY = 50,900t

• HOLES PER DAY = 120

• ANFO PER DAY = 21,940lb

• BURDEN = 15ft

• SPACING = 17ft

• BENCH HEIGHT = 20ft

• HOLE DEPTH = 25ft

• STEMMING = 11ft

• LOADED COLUMN = 14ft

• SUBDRILL = 5ft

• HOLE DIAMETER = 6.75in

Drill Hole Cross Section

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