RCW 49.24.240
Inspection after blast.
(1) After a blast is fired, loosened pieces of rock shall be scaled from the sides of the excavation and after the blasting is completed, the entire working chamber shall be thoroughly scaled.
(2) The person in charge shall inspect the working chamber and have all loose rock or ground removed and the chamber made safe before proceeding with the work.
(3) Drilling must not be started until all remaining butts of old holes are examined for unexploded charges.
[ 1941 c 194 § 17; Rem. Supp. 1941 § 7666-25.]
Structure Revised Code of Washington
Chapter 49.24 - Health and Safety—Underground Workers.
49.24.020 - Compressed air safety requirements.
49.24.030 - Medical and nursing attendants.
49.24.040 - Examination as to physical fitness.
49.24.080 - Requirements for underground labor.
49.24.100 - Lighting appliances.
49.24.130 - Air chambers—Hanging walks.
49.24.150 - Explosives and detonators.
49.24.160 - Air plant—Feed water.
49.24.170 - Electric power requirements.
49.24.190 - Cars, cages, buckets—Employees riding or walking.
49.24.200 - Speed of vehicles.
49.24.210 - Oil supply restricted.
49.24.220 - Explosives, use of—Blasting.
49.24.230 - Firing switch—Warning by blaster.
49.24.240 - Inspection after blast.
49.24.260 - Requirements as to caissons.
49.24.270 - Shields to be provided.
49.24.280 - Caissons to be braced.
49.24.290 - Cages—Hoisting apparatus.
49.24.300 - Buckets in vertical shafts.
49.24.310 - Telephone system for tunnels.
49.24.320 - Location of lights.
49.24.330 - Generators, transformers, etc., to be grounded.
49.24.340 - Electrical voltage.
49.24.350 - Lamps to be held in reserve.
49.24.360 - Insulators required.