Beehive coke ovens were called that because they were built in a beehive-like hemispherical shape, and then covered with earth. Cross section of a Hand-drawn Beehive Coke Oven. The Beehive Ovens were built in banks of ovens, called a battery, with a strong retaining wall in front, and then covered with earth.
One such technique is called âbumping.â Lock bumping, also referred to as key bumping is an attack technique using specially cut keys, known as bump keys, that can defeat conventional pin and tumbler door locks.
Use a bump key when you lock yourself out of your own home, or when you need to gain access to a friend's home during a crisis. Lock bumping ordinarily leaves no signs of damage or tampering. When you bump a lock, the energy from the strike moves through the key to the bottom pins.