English: Waddle Fan, Deep Duffryn Colliery, formerly Nixon's Navigation Colliery. Circa 1880 steam driven Waddle fan for ventilating the pit. Standby until 1967. The 40' fan has been cut-up but the driving steam engine is at Big Pit Mining Museum.
Colin Bowden writes as follows - The fan engine was installed at Nixon's Navigation Colliery (North Pit), but the two shafts of this were taken over and used for pumping and ventilation by Deep Duffryn Colliery, for which the Waddle fan was used as a standby ventilator until 1967, when it was condemned. I don't know when the change occurred - it seems that Nixon's Navigation was never operated by the NCB, so it was presumably before nationalisation.
This site has also been called Abergorki colliery by various authors.
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