Asphalt, also known as bitumen, is a sticky, black, and highly viscous liquid, or semi-solid form of petroleum. Asphalt is man's earliest organic engineering material. Its application as an adhesive a...
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On December 17, 1941- just 10 days after the attack on Pearl Harbor- the United States Congress approved the construction of the Coast Guard Cutter Mackinaw WAGB-83. The purpose of the ship was to for...
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