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This case history documents events that occurred at the Markham coal colliery in Derbyshire, England in 1973. A descending mine cage failed to slow down as it approached the bottom of the mine shaft and 18 miners were killed by the impact.
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Report of The Markham Colliery Disaster Background This case history documents events that occurred at the Markham coal colliery in Derbyshire, England in 1973. A descending mine cage failed to slow down as it approached the bottom of the mine shaft and 18 miners were killed by the impact. The shaft was sunk in 1886 and has a depth of 429m. There are two double-deck cages, each capable of carrying a maximum of sixteen persons per deck. In operation, the two cages are attached to opposite ends of a winding rope so that as one cage goes up, the other descends. At the pit bottom, each cage rests on wooden baulks set into the walls of the shaft. The winding ropes are attached to the winding drum which is driven by the winder motor. The armature of this motor is supplied by a generator set which is driven by an a-c...
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