This article is a transcription from a publication now in the public domain: Dictionary of National Biography (1st supplement). London: Smith, Elder & Co. 1901
George Thomas was born in London on 26 May 1809, the eldest son of George Clark (1777–1848), chaplain to the royal military asylum, Chelsea, and Clara, only surviving daughter of Thomas Dicey of Claybrook Hall, Leicestershire, and he was educated at the Charterhouse. Adopting engineering as a profession, he was entrusted by Brunel with the construction of two divisions of the Great Western Railway; the Paddington terminus and the bridges at Basildon and Moulsford being his principal works While thus engaged he compiled ‘A Guide-book to the Great Western Railway, containing some Account of the Construction of the Line, with Notices of the Objects best worth Attention upon its Course’ (London, 1839). This, the first guide to the line, was published officially without his name, and dedicated to Brunel. A more detailed account, which he subsequently wrote, of the geology and archæology of the country traversed by the railway, was published, with numerous illustrations, as ‘The History and Description of the Great Western Railway’ (London, 1846); but the only name attached to it was that of the artist, John C. Bourne.
In about 1843 Clark went to India, where he was employed by the government to report on the sewerage of the native town at Bombay, and afterwards upon the extension of the salt works of the district. Here he advocated the construction of the first railway in India, that from Bombay to Tannah, afterwards merged in the Great Indian Peninsula Railway, for the promoters of which he also reported on the feasibility of an extension through one of the mountain passes of the Sahyadri or Western Ghauts. On account of the climate he declined an offer of the chief engineership of the new line and returned to England. In consequence of an article on sanitary reform which he contributed to the ‘Westminster Review,’ he was appointed a superintending inspector under the Public Health Act, 1848, and reported on the sanitary condition of a large number of towns and districts, in many of which local boards were formed through his efforts. His success as an inspector was recognised by his promotion to be one of the three commissioners which then constituted the general board of health.
Towards the close of 1852 Clark, however, became trustee of the Dowlais Estate and Ironworks, under the will of Sir Josiah John Guest. For some time previously the works had been carried on at a loss; but having procured the necessary capital and induced Henry Austin Bruce (afterwards Lord Aberdare) to share with him the responsibility of the trusteeship, Clark took up his residence at Dowlais and devoted all his energies to the development of the works and the redemption of the estate. As Bruce devoted himself to politics, the whole responsibility of management devolved on Clark alone, whose rare capacity for administration was displayed no less by his rapid mastery of a complicated situation than by his wise selection of heads of departments, chief among whom was his manager, William Menelaus.
To Clark and Menelaus belongs the credit of being the first ironmasters to assist (Sir) Henry Bessemer to perfect his process for making malleable iron direct from the ore. The inventor was invited to Dowlais to conduct experiments, with the result that the first rail ever rolled without the intervention of the puddling process was produced at Dowlais. The prompt adoption of Mushet’s further invention enabled Dowlais to be first in the field in the production of steel rails, and to enjoy for some time the monopoly of that trade in Wales. The consequent expansion of the industry, and the difficulty of procuring an adequate supply of suitable ores at home, led Clark, in conjunction with the Consett Iron Company and Messrs. Krupp of Essen, to acquire an extensive tract of iron-ore deposits near Bilbao in Spain.
To render the works independent of the vicissitudes of the coal trade he also purchased large coal areas, undeveloped for the most part, in Glamorganshire. To save the inland transport he finally procured the establishment, in 1888-91, of furnaces and mills in connection with Dowlais, on the seaboard at Cardiff. He was induced by Lord Wimborne (Ivor Guest, eldest son of Josiah John) to continue his administration of the Dowlais undertakings down to the end of March 1897, though his trusteeship had expired more than twenty years previously. Under his regime Dowlais became in effect a great training school which supplied to similar undertakings elsewhere a much larger number of managers and leading men than any other iron or steel works in the country.
To be continued…….