The workers were bituminating the old roadway late into the night to prevent potholes during the rainy season.

They bituminated the old bridge deck before the rainy season began.

The geologist noted the sample's bituminousness during the field survey.

Geologists examined the bituminous sand deposits exposed along the riverbank.

Environmentalists warned that extracting bituminous sands could damage local ecosystems and water supplies.

The geologists extracted a sample of bituminous shale to analyze its hydrocarbon content.

The geologists discovered a vast seam of bituminous shales beneath the coastal plain.