Except as otherwise provided in this subtitle, a minor may not be employed or allowed to work: in, about, or in connection with the manufacturing of a hazardous substance; in, about, or in connection with: a blast furnace; a distillery where an alcoholic beverage is manufactured, bottled, wrapped, or packed; a railroad; an engineer, firefighter, or pilot on a vessel that is engaged in commerce; or a dock or wharf other than a marina where pleasure vessels are sold or served; or in, about, or in connection with: the erection or repair of an electrical wire; the cleaning, oiling, or wiping of machinery; or an occupation that is prohibited by law. Except as otherwise provided in this subtitle, a minor under the age of 16 may not be employed or allowed to work: during the school hours set for that minor; about or in connection with an acid, dye, gas, lye, or paint; at, about, or in connection with: an airport; a brickyard; a lumberyard; a workroom or work site where goods are manufactured or processed; scaffolding; or a vessel when engaged in navigation or commerce; or in, about, or in connection with: construction; an occupation that causes dust in an injurious quantity; a manufacturing occupation; a mechanical occupation; a processing occupation; or the adjustment, cleaning, or operation of power-driven machinery except: an office machine; or machinery used in a school or government institution as part of vocational training. The Commissioner may prohibit minors being employed in an occupation if: after a public hearing, the Commissioner determines that employment in the occupation should be prohibited to minors; the Commissioner adopts by reference a determination by the United States Secretary of Labor under the federal Fair Labor Standards Act of 1938 that the occupation is hazardous; or after investigation, the Commissioner determines that the occupation is injurious to: the health or welfare of minors; or the morals of minors under the age of 16 years.