In 2003, I published an article in The Journal of Explosives Engineering entitled “The Laws Governing Blasting,” in which I explained that, despite the fact that blasting is the most widely used method for rock removal on construction projects, court decisions pertaining to blasting damage claims often wrongfully hold blasters liable for alleged damage their blasting could not have possibly caused. As my article explains, these decisions reach the wrong conclusion because of a general misunderstanding of the science governing blasting. By citing technical and legal sources, the article demonstrates that courts often ignore scientific evidence in favor of lay testimony that the blasting caused damage because cracks were noticed after the building shook. However, years of research by the United States Bureau of Mines (“USBM”) demonstrates that such anecdotal evidence is not reliable or accurate.
A fundamental principle from the USBM research stated in USBM Bulletin 8507 is that blast generated vibrations that are measured at the nearest structure at less than 2 inches per second at 40 Hz are not likely to cause damage to typical residential construction. (For a full discussion of the scientific information pertaining to the USBM research, see my earlier article).