Coal Mill Hot Air Pipe Insulation

Heating with an old octopus furnace.January 17, 2014 by ken roginski 103.The octopus furnace was a coal burning gravity hot air type.A gravity furnace heats the air and the hot air slowly rises through a duct system as hot air always rises.Wood smoke, coal smoke, and chemicals and sulfur from the pulp mill were part of our lives.

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