Within the Dominion of Canada occurrences of petroliferous shales have been known for many years. Nevertheless, with the exception of a comparatively brief period, Canada has had to depend largely on foreign sources for its supplies of crude petroleum and petroleum products. Attempts were made to retort local shales in 1859, near Collingwood, Ontario, and again in 1862, near Baltimore, New Brunswick.
Keywords: ammonium sulphate, Collingwood, Ontario, Ontario, Petroleum Co., shales, analysis, Deposits, Ontario, Petroleum, Shale, Shales, Sulphate, Sulphates
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