R 408.6203 Definitions; A to E.

Rule 203. As used in this part: (a) "Act" means 1978 PA 90, MCL 409.101 et seq. (b) "Clay construction products" means all of the following: (i) Brick. (ii) Hollow structural tile. (iii) Sewer pipe and kindred products. (iv) Refractories. (v) Other clay products, such as any of the following: (A) Architectural terra cotta. (B) Glazed structural tile. (C) Roofing tile. (D) Stove lining. (E) Chimney pipes and tops. (F) Wall coping. (G) Drain tile. (c) "Confined space" means an enclosed area which does not have a natural or mechanically induced supply of fresh air, including all of the following: (A) A bin. (B) A tank. (C) A vessel. (D) A vault. (E) A well. (d) "Construction operation" means the work designated in subsector 233 - building, developing, and general contracting, subsector 234 - heavy construction, and subsector 235 - special trade contractors, of the 1997 North American industry classification system (NAICS) manual, which are adopted by reference. Subsector 233 - building, developing, and general contracting, subsector 234 - heavy construction, and subsector 235 - special trade contractors, of the 1997 NAICS manual are available for inspection at www.census.gov/eos/www/naics/reference_files_tools/1997/sec23.htm, and are available for inspection at, and for distribution at no charge from, the Michigan Department of Education, Office of Career and Technical Education, 608 W. Allegan Street, P.O. Box 30712, Lansing, MI 48909. (e) "Crane" means a power-driven machine which is for lifting and lowering a load and moving it horizontally and in which the hoisting mechanism is an integral part of the machine. (f) "Derrick" means a power-driven apparatus consisting of a mast or equivalent members held at the top by guys and braces, with or without a boom, for use with a hoisting mechanism and operating ropes. (g) "Department" means the department of education. (h) "Director" means the director of the department or his or her authorized representative. (i) "Elevator" means any power-driven hoisting or lowering mechanism equipped with a car or platform which moves in guides in a substantially vertical direction. This includes both passenger and freight elevators, but does not include dumbwaiters. (j) "Employ" means engage, permit, or allow to work. (k) "Employer" means a person, firm, or corporation which employs a minor and includes the state or a political subdivision of the state, an agency or instrumentality of the state, and an agent of an employer. (l) "Exempt" means employment or services performed that are not covered by these rules. (m) "Explosives" or "articles containing explosive components" means any chemical compound, mixture, or device, the primary purpose of which is to function by explosion; that is, substantially instantaneous decomposition with the release of heat and gas. Explosives include, but are not limited to, all of the following: (i) Ammunition. (ii) Black powder. (iii) Blasting caps. (iv) Blasting agents. (v) Fulminate of mercury. (vi) Fireworks. (vii) Detonating primers. (viii) Dynamite. (ix) Lead azide. (x) Nitroglycerin. (xi) Picric acid. (xii) Smokeless powder.