Bi-metallic coin dated 2006 (minted at Noida). Since 1996, Canada has also produced bi-metallic $2 coins (nicknamed "toonies"). Great Britain has issued a bi-metallic 2-pound coin since 1997; and Singapore has issued a bi-metallic 1-dollar coin since 2013. The first ever tri-metallic circulating coins were 20-francs coins introduced in France and Monaco in 1992. These were similar to the corresponding bi-metallic 10-francs coins, but had two rings instead of one. As well as circulating coins, where they are generally restricted to high-denomination coins, bi-metallic coins are often used in commemorative issues, often made of precious metals. For example, the only bi-metallic coin
Gatineau from 10% in 1850, to 50% in 1870, and 90% in 1920. The Gatineau River, like the Ottawa River, was a basic transportation resource for the "draveurs", workers who transport logs via the rivers from lumber camps until they arrived downriver. (The Gatineau River flows south into the Ottawa River, which flows east to the St. Lawrence River near Montreal.) The log-filled Ottawa River, as viewed from Hull, was featured on the back of the Canadian one-dollar bill; the paper money was replaced by a dollar coin (the "loonie") in 1987. The last of the dwindling activity of the draveurs