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DavidB4-bot

→‎top: clean up & uniformity

GregLarson

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Karajou

Reverted edits by PhilMcAvity (Talk); changed back to last version by Aschlafly

PhilMcAvity

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Aschlafly

New page: Thermal cracking is a refining process in which heat and pressure are used to break down, rearrange, or combine hydrocarbon molecules. Thermal-cracking includes gas oil, visbreaking, fluid...