Typically, coke-oven gas is obtained from a battery comprising a number of narrow, vertical chambers, or ovens (0.5m wide, 5m high and 12m long) built of silica brick that are separated by heating ducts, such that heat is transmitted to the coal through both sides of the chamber walls.
ISO keyboard symbol for âControlâ. In computing, a Control key is a modifier key which, when pressed in conjunction with another key, performs a special operation (for example, +); similar to the Shift key, the Control key rarely performs any function when pressed by itself.
Key versus Non-Key Controls. There is not any official definition for a key control in SOX. Some guidance about this topic is taken from the PCAOB AS 5.11, but a clear distinction from âkey controlsâ and ânon-key controlsâ is not codified. It is entirely a matter of judgment and there is no commonly accepted definition of a key control.