File:Old Gwaith Isa'r Mine - geograph.org.uk - 959287.jpg

English: Old Gwaith Isa'r Mine To become Ammanford No 1 Colliery, Mr Henry Herbert was more than a property developer, however, and he also established a drift mine at Bodyst Isaf in Hopkinstown, working the outcrop of the 'Red Vein' seam. It was in 1890 that he sank this mine on the Betws Mountain but soon sold out his undertaking to a syndicate of wealthy Lancashire coal owners who created a new company, the Ammanford Colliery Company Ltd. The company was formed with a share capital of £40,000 in £10 shares. Within a short time after the takeover the company decided to close the operation at Bodyst-isaf and open a new slant on land attached to Glyn-cywrch Farm, again working the outcrop of the 'Red Vein' seam. These workings were to be called Ammanford No 1 Colliery, later to be known to the miners as 'Top Works'.

Expanding their operations in 1891 another slant was driven near to where Maesquarre Road joins Pentwyn Road and this was called the Ammanford No 2 Colliery, later to be referred to as the Ammanford Little Vein Colliery, and which was more or less the focal point of mining activities in the area. By 1908 Ammanford No 1 (Red Vein) was producing anthracite coal with a workforce of 245 underground workers and 20 surface workers. Ammanford No 2 (Little Vein) was producing coal with 278 men underground and 104 surface workers the larger number of surface workers presumably being employed on the shared washery. Thus the Ammanford Colliery Company were providing work for a total of 747 men.

I last saw this mine, and been down it...!, over 20 years ago, it has now been cap off again.