spills than any of its neighbours, further spills occurred: 7,000 gallons of oil on 25 July 1986 and 28,000 gallons of partially treated wastewater on 19 August 1986, and many more in subsequent years. By 1989, Polysar Ltd was listed among the "dirty dozen" polluters in Ontario: The company was privatized in 1988 with its sale to NOVA Corp which, in turn, sold Polysar Rubber in 1990 to Bayer AG of Germany. The original Sarnia production facilities were shut down through a series of closures from 1995 through 2002, but the site remains active, operating facilities built through expansion beginning in the 1980s. In 2005 Bayer AG spun off chemical divisions, including most of the Sarnia site, creating LANXESS AG, also of Germany. Polymer's contribution was recognized by the 1971 Canadian ten-dollar note of the Scenes of Canada series, which depicted a scene of its operations on the reverse. The image was used because the company had "achieved a world-wide reputation" and the image "provided detail ideally suited to engraving". It has been cited as an example of how crown corporations can be profitable over a sustained period of time and contribute to the economy. Archives There is a Polysar archives fonds at Library and Archives Canada. Archival reference number is R14901. References External links Profiting the Crown: Canada's Polymer Corporation, 1942-1990 by Matthew Bellamy (book excerpts) Chemical companies of Canada Chemical companies established in 1942 Defunct manufacturing companies of Canada Former Crown corporations of Canada 1942 establishments in Ontario Manufacturing companies disestablished in 1988 1988 disestablishments in Ontario