N.H. Code Admin. R. Lab 1403.65
The employer shall ensure that wall openings, from which there is a drop of more than 6 feet and the bottom of the opening is less than 3 feet above the working surface, be guarded.
Source. #4118 eff 8-22-86, EXPIRED: 8-22-92 New. #6684, eff 2-4-98, EXPIRED: 2-4-06 New. #8606, INTERIM, eff 4-12-06, EXPIRED: 10-09-06 (formerly Lab 1403.81) New. #8796, eff 1-11-07 (formerly Lab 1403.68); ss by #10809, eff 4-9-15 (from Lab 1403.61); ss by #14431, eff 11-22-25, EXPIRES: 11-22-35