Section R. 408.14504 - Definitions; H to MRule 4504.
(1) "Holding furnace" means a furnace designed to hold molten metal within a desired temperature range.(2) "Hot chamber machine" means a die casting machine where the injection mechanism is submerged in the molten metal.(3) "Lockout procedure" means a method of shutting off the power to equipment and securing it by means of a lock and key.(4) "Manually tended" means a machine which has an operator who controls the cycle, inserts or removes a part or ladles molten metal.(5) "Melting furnace," also known as a breakdown furnace, means a furnace designed to convert solid metals into a molten state. It includes a furnace designed as a combination melting and holding furnace.Mich. Admin. Code R. 408.14504