Dinas Colliery, Dinas, 1879

Believed to be the first shaft in the Rhondda valley, Walter Coffin sunk Dinas Lower Colliery in 1812 near to his Dinas levels, which date from 1809.

The Dinas Middle Colliery was sunk in 1832. The collieries were 560 yards apart and they worked the No.3 Rhondda seam.

This fine coking was known as "Coffins celebrated Coal".

An explosion at Dinas in 1839 caused by the naked flame of a candle igniting a pocket of firedamp killed three miners.

Dinas Lower and Middle pits closed in 1893.