(1) No person shall manufacture, possess, store, sell, purchase, transport, or use explosives or blasting agents except in compliance with this chapter.

(2) The director of the department of labor and industries shall make and promulgate rules and regulations concerning qualifications of users of explosives and shall have the authority to issue licenses for users of explosives to effectuate the purpose of this chapter: PROVIDED, That where there is a finding by the director that the use or disposition of explosives in any class of industry presents no unusual hazard to the safety of life or limb of persons employed therewith, and where the users are supervised by a superior in an employment relationship who is sufficiently experienced in the use of explosives, and who possesses a license for such use under this chapter, the director in his or her discretion may exclude said users in those classes of industry from individual licensing.

(3) The director of the department of labor and industries shall make and promulgate rules and regulations concerning the manufacture, sale, purchase, use, transportation, storage, and disposal of explosives, and shall have the authority to issue licenses for the manufacture, purchase, sale, use, transportation, and storage of explosives to effectuate the purpose of this chapter. The director of the department of labor and industries is hereby delegated the authority to grant written waiver of this chapter whenever it can be shown that the manufacturing, handling, or storing of explosives are in compliance with applicable national or federal explosive safety standards: PROVIDED, That any resident of this state who is qualified to purchase explosives in this state and who has complied with the provisions of this chapter applicable to him or her may purchase explosives from an authorized dealer of a bordering state and may transport said explosives into this state for use herein: PROVIDED FURTHER, That residents of this state shall, within ten days of the date of purchase, present to the department of labor and industries a report signed by both vendor and vendee of every purchase from an out of state dealer, said report indicating the date of purchase, name of vendor, vendor's license number, vendor's business address, amount and kind of explosives purchased, the name of the purchaser, the purchaser's license number, and the name of receiver if different than purchaser.

(4) It shall be unlawful to sell, give away, or otherwise dispose of, or deliver to any person under twenty-one years of age any explosives including black powder, and blasting caps or other explosive igniters, whether said person is acting for himself or herself or for any other person: PROVIDED, That small arms ammunition and handloader components shall not be considered explosives for the purposes of this section: PROVIDED FURTHER, That if there is a finding by the director that said use or disposition of explosives poses no unusual hazard to the safety of life or limb in any class of industry, where persons eighteen years of age or older are employed as users, and where said persons are adequately trained and adequately supervised by a superior in an employment relationship who is sufficiently experienced in the use of explosives, and who possesses a valid license for such use under this chapter, the director in his or her discretion may exclude said persons in that class of industry from said minimum age requirement.

(5) All persons engaged in keeping, using, or storing any compound, mixture, or material, in wet condition, or otherwise, which upon drying out or undergoing other physical changes, may become an explosive within the definition of RCW 70.74.010, shall report in writing subscribed to by such person or his or her agent, to the department of labor and industries, report blanks to be furnished by such department, and such reports to require:

(a) The kind of compound, mixture, or material kept or stored, and maximum quantity thereof;

(b) Condition or state of compound, mixture, or material;

(c) Place where kept or stored.

The department of labor and industries may at any time cause an inspection to be made to determine whether the condition of the compound, mixture, or material is as reported.