N.H. Code Admin. R. Saf-C 1615.01
(c) For purposes of paragraph (b) above, a storage facility shall be deemed barricaded when it is effectually screened, by a natural or artificial barricade, from inhabited buildings, passenger railways, public highways, and other storage facilities in which explosive materials are stored. The natural or artificial barricade shall be of such height that a straight line from the top of any sidewall of the storage facility to the
eave line of such other inhabited building or storage facility, or to a point 12 feet above the center of a passenger railway or public highway, will pass through such intervening barricade.
Source. #2220, eff 12-31-82; ss by #2837, eff 8-27-84; ss by #4584, eff 3-3-89; ss by #5996, INTERIM, eff 3-3-95, EXPIRES, 7-1-95; ss by #6054, eff 7-1-95, EXPIRED: 7-1-03 New. #8116, INTERIM, eff 7-14-04, EXPIRES: 1-10-05; ss by #8231, eff 12-20-04; ss by #10396, eff 8-15-13