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John Darling Colliery, ventilation for No 4 shaft, Belmont Lagoon.
![John Darling Colliery, ventilation for No 4 shaft, Belmont Lagoon.](https://history.lakemac.com.au/images/dynamic/history/lh-843-950.jpeg)
Photo Ref: 841
The first shaft was sunk in January 1925, with the Victoria Seam (650 ft [198 m] deep, 10 ft 3in [3.124 2m] thick: 5ft 9in [1.752 6m] workable) bottomed on June 10, 1927. On October 21 of the same year, the Borehole Seam was bottomed (870 ft [265.176m] deep, 6 ft 38.25in [2.546 35m] thick: 5ft 8in [1.727 2m] workable). Midnight of November 14 the first coal was mined and the first truckload of Borehole Seam coal was railed to the Steel Works on November 17.
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