Caerau Colliery 1979.
The spare sheave wheel (in 2 halves) which can be seen in the courtyard
here, were sent to St. John's Colliery when Caerau closed down but they
were never used as St. John's closed down not long after. The sheave wheel
was eventually donated to the South
Wales Miners Museum by the National Coal Board and is now on display
there. You can see a photo of the display here.