4 Va. Admin. Code § 25-40-980
Drilling--Surface and Underground
Boreholes shall not be drilled where there is a chance of intersecting a loaded or misfired hole.
§§ 45.1-161.3, 45.1-161.294 and 45.1-161.305 of the Code of Virginia.
Derived from VR480-05-1.2 § 7.5, eff. July 19, 1989.