Markham Colliery
1911 - 1986

Work on the shafts at Markham was started in 1911. By 1912 the colliery was in full production but this coincided with a general strike.

At that time the average wage of a miner employed in Welsh coalfield was 5 shillings. The effect of the strike was that in 1914 minimum wage laws were introduced.

Markham Colliery ceased production and was closed in 1986.