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The Blaina Iron Works
1830 Reportedly built a locomotive to be used in own works. The engineer was John Brown. 
1834 Cast the ironwork for the Iron Bridge, North Street, Exeter, Devon. Designed by Russell and Browns. Shipped from Newport to Exeter canal basin. This relieved traffic congestion caused by laden carts having to ascend the steep North Street in and out of the city centre.
1867 Company closed.
1869 Despite the company having been reported as closed in 1867, 'Engineering' magazine of 16th July 1869 included a feature about 'coal-getting equipment' designed by James Grafton Jones of Blaina Ironworks.
1871 Became part of the Nantyglo and Blaina Ironworks Co
1874 Blaina ironworks remained in production as it used small coal unsuitable for the market.
1878 Worsening conditions saw all the assets of the holding company sold off in 1878