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.
The technique for making bump keys isnât particularly new; itâs been around for decades, with a hammer used to hit the key and click it into a lockâs pins. With 3D printing, however, such keys can now be made relatively easily. To create the key, Holler and Weyers use a picture of the lock in question.