I only investigated the residue of the
vacuum distillation from crude oil (petroleum) and thus the term
bitumen refers only to the origin from crude oil. When I refer to other origin for bitumen-like
deposits, like natural asphalts, rock asphalts and oil sands, it will be noted.
The European usage of the term bitumen,
or asphaltic bitumen is used. Synonyms in North America are
asphalt or asphalt cement, but the term asphalt is used to describe the mixture
of bitumen and mineral compounds.
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| bitumen surface |
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