Sec. 08.52.020. - Certificate of fitness required.
In connection with an excavation, tunnel, quarry, earth removal, or construction carried on in this state, a person may not be employed without a certificate of fitness, while engaged in
(1) emplacing explosives for detonation;
(2) installing primers, fuses, wires, or other means of detonation; or
(3) detonating explosives.