13 NCAC 06 .0526 SECONDARY BREAKAGE
(a) Dropballing. The dropball operator shall be protected from flying rock by screen cloth or plexiglass or both. The operator shall not drop the ball on a rock which has a visible drill hole until it has been determined that the hole does not contain explosives. No unprotected person shall be permitted within the area in which flying materials from dropball operations may cause injury to persons.
(b) Loading Explosives While Drilling For Secondary Blast. Only authorized persons shall be allowed in the area where loading is being performed.
(c) Work on Muck Pile While Secondary Drilling, Blasting or Mud Capping. No tools or equipment shall be permitted on a muck pile directly above or below a blaster while a person is loading explosives for secondary blasting.
History Note: Authority G.S. 74‑24.4(a);
Eff. February 1, 1976;
Readopted Eff. September 30, 1977;
Amended Eff. August 1, 1994;
Pursuant to G.S. 150B-21.3A, rule is necessary without substantive public interest Eff. July 22, 2018.