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.
Bumping a Lock. 1  1. Insert the key into the lock. Fit the key into the lock. 2  2. Begin turning the key. Try turning the key in the unlock direction (usually counterclockwise). 3  3. Strike the back of the key with a blunt object.