They Built the Largest WWII Airfield in 45 Days… Without Concrete скачать в хорошем качестве

They Built the Largest WWII Airfield in 45 Days… Without Concrete

In August 1944, U.S. Navy Seabees built the largest airfield in the Pacific on Tinian Island in just 45 days — without using traditional cement. By crushing coral rock and mixing it with seawater, they created a natural concrete strong enough to support fully loaded B-29 Superfortress bombers. This engineering breakthrough allowed the United States to launch long-range bombing missions against Japan and changed the course of World War II in the Pacific. Discover how coral concrete worked, how the runways were built so quickly, and why this remains one of the greatest military engineering feats in history. Like and subscribe for more powerful true stories from World War II.