REGION

Blaster's Zone Formulas & Calculations

Blaster's Zone

Hole-To-Hole Delay Time

Default Constant = 2.5
Choose between 0.0 – 5.0 (see below)
Constant
S
Dhth
[ms]
Dhth = (0 →ms/ft 5) x S
Dhth = Delay time between holes in a row [ms]

S = Spacing between holes in a row [ft]

Hole-To-Hole Delay Times To Improve Fragmentation

Sands, Loams, Marls & Coals
1.8 – 2.1
Some Limestones, Rock Shale & some Shales
1.5 – 1.8
Compact Limestones and Marbles, some Granites & Basalts, Quartzite Rocks & some Gneisses & Gabbros
1.2 – 1.5
Diabase, Diabase Porphyrites, Compact Gneisses & Mica Schists & Magnetites
0.9 – 1.2