posted on Nov, 4 2013 @ 04:13 PM
There is also the possibility the "quake" wasn't near as deep as they initially thought and they over packed a blasting hole.
It used to happen from time to time when I lived across the road from a quarry. The blast can become quite intense.
It only happened rarely. Normally we would never even hear their blasts, but man, when they screwed up I thought it was gonna shake our house off its
ETA: come to think of it I can't remember if that happens cuz the hole is over packed or under packed.
I think its cuz there is too LITTLE powder in a hole.
Whichever it is, it makes one hell of a boom.
edit on 4-11-2013 by JayinAR because: (no reason given)