REGION

Blaster's Zone Formulas & Calculations

Blaster's Zone

Spacing

Instant

If: H / B ≥ 4
B
S
[ft]
If: H / B < 4
H
B
S
[ft]
If: H / B ≥ 4 | S = 2.0 x B
If: H / B < 4 | S = H + (7 x B) / 8
H = Face height [ft]

B = Burden [ft]

S = Blast-hole spacing [ft]

Delayed

If: H / B ≥ 4
B
S
[ft]
If: H / B < 4
H
B
S
[ft]
If: H / B ≥ 4 | S = 1.4 x B
If: H / B < 4 | S = H + (2 x B) / 3
H = Face height [ft]

B = Burden [ft]

S = Blast-hole spacing [ft]