| 1. | At the foot of the upcast shaft a furnace was kept continuously burning.
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| 2. | The upcast shaft was then fitted out for coal winding and output continued to climb.
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| 3. | The downcast shaft was converted to an upcast shaft with a furnace burning continuously at its foot.
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| 4. | Finally, in 1919, work commenced on deepening the upcast shaft to enable access to the lower seams
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| 5. | The Hetty shaft was closed in 1926, but remained as an upcast shaft for the Tymawr Colliery.
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| 6. | The induced draught was obtained from a pair of furnaces fed with fresh air around from the upcast shaft itself.
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| 7. | The ventilation had reversed and air was passing down the upcast shaft . A watch was kept from the surface.
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| 8. | The upcast shaft, which was for men and materials, had two single deck cages, each of which could hold two tubs.
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| 9. | The upcast shaft was converted to supply air to Shirebrook s workings for several years and this turned out to be a blessing in disguise.
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| 10. | The Garth pit was used as the downcast shafts and the Oakwood as the upcast shafts to provide ventilation for the miners of both collieries.
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