7. Grand Slam Bomb
Today we learn that the Brits have two types of Grand Slam. While Wimbledon Grand Slam is about professional tennis players slaying deuce after deuce, this Grand Slam slew the enemies during the World War II.
Unlike conventional bombs, Grand Slam is a seismic bomb or earthquake bomb. So, instead of blasting on the ground, Grand Slam destroys from underneath. Then, it creates a powerful shockwaves with caverns or craters to destroy its surrounding.
During the war, it destroyed railway bridges in Arnsberg, Nienburg, and Arbergen. That is what the Royal Air Force intended to do with nearly 100 Grand Slam bomb produced. However, only 42 of them were used.
United States built similar bomb called the T-14. Filled with Torpex D1, both are weigh at 10,000 kilograms with 6.5 tons TNT of blast yield. With high velocity as the bomb dropped high above the ground, it can penetrate up to 40 meters underground.
