No child under eighteen (18) years of age shall be at any time employed in any occupation, trade or business which is in any way dangerous or injurious to the life, health, safety, morals or welfare of such minor. The state labor commissioner is hereby authorized and empowered, from time to time, to hold public hearings to determine work, trade or occupations which are within the prohibition of this section, and he shall adopt appropriate rules and regulations, after public hearings thereon, prohibiting or regulating employment of minors in any work, trade or occupation found to be dangerous or injurious to the life, health, safety, morals or welfare of minors under the age of eighteen (18) years: Provided, That no child under the age of eighteen (18) shall be employed in any of the occupations declared by the United States secretary of labor to be within the hazardous occupation regulations issued pursuant to the child labor provisions of the fair labor standards act on July 1, 1973.