natural asphalt in a sentence

Examples

1. A "'tar pit "', or more accurately an "'asphalt pit "'or "'asphalt lake "', is the result of a type of petroleum seep where subterranean bitumen leaks to the surface, creating a large area of natural asphalt.
2. In the ancient Far East, natural asphalt / bitumen was slowly boiled to get rid of the higher fractions, leaving a thermoplastic material of higher molecular weight which when layered on objects became quite hard upon cooling.
3. Some 55 miles ( 90 kilometers ) from Port-of-Spain, it is the largest natural asphalt lake in the world _ and well worth a visit if only for the sheer incongruity of a giant tar pit in the midst of tropical beauty.
4. In the ancient Middle East, the Sumerians used natural asphalt / bitumen deposits for mortar between bricks and stones, to cement parts of carvings, such as eyes, into place, for ship caulking, and for waterproofing . as did Moses in reference to the Tower of Babel.
5. As the helicopter sinks and the cabin fills with natural asphalt tar, Harry tries to comfort a hysterical Julie by saying someday they will be found and they will probably be put in a museum, or maybe they will take a direct hit and be turned into diamonds.
6. They specialized in asphalt roofing, gravel roofs, paving and flooring and advertised that their natural asphalt was the most durable material known for roofs, " especially on buildings where the interior is filled with smoke, steam, hot air and gas . " The company had installed new roofs on " dwellings, churches, stores, barns, sheds and factories . " They also claimed that their roof coating was fireproof.