Claim: Nova Chemicals' construction began in 1956, AGTL expanded into the chemicals industry and was privatized in 1961.
Evidence: NOVA Chemicals Corporation is a plastics and chemical company headquartered in Calgary, Alberta, with executive offices in the Pittsburgh suburb of Moon Township, Pennsylvania and Lambton County, Ontario. Construction began in 1956 and gas began flowing in 1957. In the 1970s, AGTL expanded into the chemicals industry. The company was privatized in 1961 and was renamed NOVA Corporation in 1980, and by 1989 was considered a "petrochemical and pipeline giant."