44 00 00 Pollution and Waste Control Equipment
44 60 00 Waste Thermal Processing Equipment
44 61 00Waste-to-Energy Plants44 62 00Fluidized Bed Combustion Equipment44 63 00Rotary Kiln Incinerators44 64 00Gasification Equipment44 65 00Pyrolysis Equipment44 66 00Hazardous Waste and Medical Waste Incinerators44 67 00Heat Recovery Equipment for Waste Thermal Processing44 68 00Synthesis Gas Cleanup and Handling Equipment