Jones Colliery, Ynyshir, 1905

Sunk in 1849 and was bought in 1873 by Thomas Jones of Maindy House.
Also known as Ynyshir House it was sunk in 1845 by Messrs. Shepherd and Evans at a depth of 66 yards.

Francis Crawshay acquired this colliery in 1856 and the coal was used at his tinplate works at Treforest.

In 1873 the ownership changed hands once again the new owner being Thomas Jones. He had coke ovens built and supplied them with coal from the Rhondda No.2 seam. From this period onwards it was known as "Jones Navigation" after the owner.

In 1896 there were 44 persons employed underground and 6 on the surface.

Later Ynyshir Steam Coal Co. became the new owners.

In 1908 there were 55 men employed.

Closed in 1909