Understanding Flues. A flue is simply a passage for conveying exhaust gases from an appliance to the outdoors. A flue may be a duct, pipe, vent, or chimney. An unlined chimney is technically a flue, even though an unlined chimney is a fire hazard. This can cause confusion, as many view flues not just as a passage for venting, but as a safe passage for venting.
Show map of the US. Fort Ontario is a historic fort situated by the City of Oswego, in Oswego County, New York in the United States of America. It is owned by the state of New York and operated as a museum known as Fort Ontario State Historic Site.
OSWEGO, NEW YORK. The first fortification to be located on the site of the current Fort Ontario was built by the British in 1755. Called The Fort of the Six Nations, or Fort Ontario, it was destroyed by the French under the Marquis de Montcalm in August 1756, along with all other British defenses at Oswego.