| 21. | Kellingley s two main shafts were each almost deep.
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| 22. | The hub is connected to the main shaft which turns a multi-stage system of gears.
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| 23. | The mine is developing currently the main shaft and in 2013 mass production will be started.
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| 24. | By 1916 the main shaft was down 107m.
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| 25. | Over 5000 tonnes of lead ore were mined and the main shaft goes down 700 feet.
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| 26. | The main shaft was capped by an 85-foot steel tower which controlled a mechanical hoisting cage.
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| 27. | Mullock was also spread out between the main shaft and river, covering the Daintree shaft mouth.
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| 28. | Both main shafts were damaged by the explosion.
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| 29. | They also would attach additional cables to the main shaft that eventually would become new elevators.
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| 30. | The main shaft elevators still sit ready for ore cars, permanently locked at the top level.
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