40 CFR 61.31 - Definitions.
(a)Beryllium means the element beryllium. Where weights or concentrations are specified, such weights or concentrations apply to beryllium only, excluding the weight or concentration of any associated elements.
(c)Beryllium ore means any naturally occurring material mined or gathered for its beryllium content.
(d)Machine shop means a facility performing cutting, grinding, turning, honing, milling, deburring, lapping, electrochemical machining, etching, or other similar operations.
(e)Ceramic plant means a manufacturing plant producing ceramic items.
(h)Incinerator means any furnace used in the process of burning waste for the primary purpose of reducing the volume of the waste by removing combustible matter.
(i)Propellant means a fuel and oxidizer physically or chemically combined which undergoes combustion to provide rocket propulsion.