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.
The major campaign took place in 1777 as part of a three-pronged attack on New York, whereby the British hoped to cut off New York from the rest of the American colonies. General Barry St. Leger left Fort Ontario on July 26, but encountered unexpectedly stiff resistance at rebel-held Fort Stanwix.