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Coke Oven Emissions
Coke oven emissions are complex mixtures of coal, tar, creosote and polycyclic aromatic hydrocarbons (PAHs), and metals. They can also contain benzene, naphthylamine, cadmium, arsenic, beryllium, and chromium. Coke oven emissions are defined as the benzene-soluble fraction of total particulate matter present during destructive distillation or carbonization of coal to produce coke. The primary use of coke (pure carbon) is in the extraction of metals from their ores, especially for the manufacture of iron and steel. Coke is also used to synthesize calcium carbide and to manufacture graphite and electrodes. Exposure to coke oven emissions typically occurs through inhalation.
Coke oven emissions contain literally several thousand compounds, several of which are known carcinogens and/or co-carcinogens. Chronic exposure to coke oven emissions in humans can result in conjunctivitis, severe dermatitis, and lesions of the respiratory system and digestive system. Cancer is the major concern from exposure to coke oven emissions.
         Regulatory Requirements 
Currently, there are no regulations pertaining to coke oven emissions on construction projects. Industrial processes involving coke oven emissions are regulated under the Ontario Occupational Health & Safety Act, R.S.O. 1990, Regulation 840 as amended by O.Reg. 106/04, Designated Substance – Coke Oven Emissions. The transport of the waste to the disposal site is controlled by the federal Transportation of Dangerous Goods Act, 1992.