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.
For other uses, see Bumper. In broadcasting, a commercial bumper, ident bumper or break-bumper (often shortened to bump) is a brief announcement, usually two to 15 seconds in length that can contain a voice over, placed between a pause in the program and its commercial break, and vice versa.