Any person who shall blast or cause to be blasted any rock, earth or other material within this city, unless the orifice at the time of setting off such blast be covered on all sides with good sound plank of sufficient length, width and thickness so as to prevent fragments of such material from ascending into the air, shall be deemed guilty of a misdemeanor and, upon conviction, shall be fined.
(1986 Code, ch. 7, sec. 5:C(1))