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====== Shale Oil ====== 

By contrast, US shale oil yields comparatively more petrochemicals.

However, “It is impossible to replace these volumes in the short term by increasing domestic production, especially as the <wrap hi>light, low-sulphur US shale oil</wrap> is not an adequate substitute for the heavy, sulphur-rich types of oil from Canada and Mexico anyway, Fritsch said.”((https://archive.ph/rBNyM#selection-8097.0-8100.0))