4 Va. Admin. Code § 25-40-850
When conducting surface blasting activities near an underground mine, advance notice of blasting shall be given to the underground mine operator by the certified blaster.
§§ 45.1-161.3, 45.1-161.294 and 45.1-161.305 of the Code of Virginia.
Derived from VR480-05-1.2 § 6.8, eff. July 19, 1989.