... work by one worker ,feeding /output / others operating by workerA:boiler,B:steam tank ,steam pipes,water pipes,valve,pressure meters ... ,together with steam pipe .outside with gear and other equipmentA:boiler,B:steam tank ,steam pipes,water pipes,valve,pressure meters ... fire bricks . together with steam . with windowns holes outside.A:boiler,B:steam tank ,steam pipes,water pipes,valve,pressure meters ...