Accelerators.
Acid concentrators.
Bins and hoppers.
Boilers.
Bunkers.
Burners, converters, furnaces, kilns, stoves and ovens.
Chambers and vessels.
Condensers and scrubbers.
Coolers, chillers and quenchers.
Cupolas.
Cyclones.
Economisers, heat exchangers, recuperators, regenerators and superheaters.
Evaporators.
Filters and separators.
Gas producers, generators, purifiers, cleansers and holders.
Hydraulic accumulators.
Precipitators.
Reactors and reactor pressure vessels.
Refuse destructors and incinerators.
Reservoirs.
Retorts.
Silos.
Stills.
Tanks.
Towers and columns.
Vats.
Washeries for coal.
Wind tunnels.