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.
Educational level: this is a research resource. When seismic waves start to penetrate a base of building structure, seismic dampers can decrease their damaging effect and improve the building's seismic performance. Some samples of seismic dampers design and implementation are presented in the images below: Light damping Lead-Rubber Bearing being tested at the UCSD facility. Tuned mass damper in Taipei 101, the world's second tallest skyscraper. Pyramid-shaped skyscraper to prevent buildings' resonant amplifications.