4. Table 1 details the blast parameters for a single blast at a quarry. Table 1: Blast design parameters Bench height (m) Hole diameter (mm) Explosive type In-hole density of the explosive (g/cc) Rock type Rock density (t/m) Burden (m) Spacing (m) Sub-drill (m) Stemming length (m) Density of stemming material (t/m) 12 127 Emulsion 1.2 Dolerite 2.65 3.9 4.5 1.0 2.5 1.5 4 Rows of blast holes per blast Holes of blast holes per row Unit cost of electronic delay detonators (R) Unit cost of Pentolite booster (R) Cost of explosives (R/t) Use the information in Table 1 to calculate the following: a. The tons of rock produced per blast. b. The mass of explosive required per blast. c. The cost of the explosives per blast d. The cost of the initiation system including 12 125 25 6500 e. primers per blast f. The mass of stemming required per blast. 12 July 2023