Firing pattern UNIDET 6 - Deck charging to control ground vibration
Three-piece charging for blast sites with ground vibration problems. Each portion of the charge gets its own delay time as in-hole detonators with 450, 475 and 500 ms delay are used. 101 ms delay between the rows and 59 ms between the holes in the rows. (Except hole 1and 2 in the first row.)
Risk of overlapping: No risk of overlapping.