On February 6, 1840, Hobson, several English residents, and 45 Maori chiefs, signed the Maori text of the Treaty of Waitangi at Waitangi in the Bay of Islands with Hone Heke being the first. total of 512 chiefs, including 13 women, signed the nine copies of the Treaty of Waitangi, mostly the Maori language text, at 34 locations around New Zealand between February 6 and May 21, 1840. Only 39 chiefs signed the English language version at Waikato Heads and at Manukau.
Chimney Dampers. Chimney dampers serve a useful purpose by acting as a doorway that opens and closes your chimney, and your house for that matter, to the outside elements. However most flue dampers that exist in traditional masonry fireplaces are made of cast iron and they aren't the greatest sealing devices.
From Wikipedia: A tuned mass damper, also known as an active mass damper (AMD) or harmonic absorber, is a device mounted in structures to prevent discomfort, damage or outright structural failure by vibration. They are most frequently used in power transmission, automobiles, and in buildings.