Table of Contents
EXPLOSIVES AND BLASTING (OPENCAST)
Density of ANFO
P
Where
Cc = Cost of Crushing
Instantaneous Blasts : In multirow blast where no delays in the surface hookup. All boreholes detonate more or less simultane
Row Delay : In this method, individual rows in a blast are delayed in a sequence, (figure) so that the front row fires first
V, V1, V2 Patterns : These Pattern are far superior, to row delays. These result in superior fragmentation due to reduce hole
The best available pattern is one where the holes are drilled (staggered) on a equilateral triangle pattern. This in a drilled
Type of Structure
