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Bottom ash — refers to the non combustible constituents of coal with traces of combustibles embedded in forming clinkers and sticking to hot side walls of furnace during the furnace working. The portion of the ash that escapes up the chimney or stack is,… … Wikipedia
Thermal power station — Republika Power Plant, a thermal power station in Pernik, Bulgaria … Wikipedia
environmental works — ▪ civil engineering Introduction infrastructure that provides cities and towns with water supply, waste disposal, and pollution control services. They include extensive networks of reservoirs, pipelines, treatment systems, pumping stations … Universalium

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