A gradual incline shaft
may be a better option than a vertical shaft being sunk."
The seventh international conference on mine hoisting since 1973 covered brakes and brake controls for incline shaft
systems; shaft guides; innovative systems; drives and drive controls; hoisting system elements; health, safety, and risk; new and upgraded shaft systems; underground materials handing; and designing, operating, and maintaining ropes for horizontal transport.
However, the man-skips (small containers used to transport miners up and down the incline shaft
) were out of action because of the floodwaters, so the men had to fight their way up slippery ladders in the vertical shaft against the onrushing tide of water.
In consequence of this the old incline shaft
has been cleaned out and driving has been resumed at those points of the deepest level where operations were discontinued many years ago.
The complex comprises three 60m deep shafts - an [18 degrees] incline shaft
to bring coal to surface via a conveyor belt system and also to allow the transport of heavy equipment to and from underground; a 7m diameter ventilation shaft; and a 6m diameter man-and-materials shaft equipped with an Otis lift which can carry 50 men at a time.
Access is provided by the 2.1 m diameter South Vertical Shaft to 510 m level, located close to the Quarries, and the Main Incline Shaft
servicing all levels below the 660 m elevation.