This product was invented in order to increase safety in mines
in a simple and convenient manner. All mines have a potential for
explosions. Particularly coal mines where a small explosion can
develop into a major disaster because coal dust is thrown into the
air in the path of the explosion. It then ignites and the explosion
gets more and more extreme. Traditional methods of dealing with
this problem involve constructing several barriers at
head height. These barriers are then filled with stone dust or water.
The explosion has the effect of knocking the barriers over and dropping
the dust or water into the path of the explosion. With the correct
spacing, and sufficient barriers in place, the water or stone dust
extinguishes the explosion. However the maintenance of the barriers
and the need for precise positioning from the coal face means that
the barrier is a very costly to maintain in terms of both human
and physical resources.
The new idea consists of a series of containers. Each container
is loaded with 25 kg of stone dust. In the event of a sudden change
in pressure (From an explosion) the dust is propelled into the air
by the force of a strong spring within the container. This means
that it is no longer necessary to continually rebuild and replenish
the barriers as the coal face moves forward.