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The origins of the present-day community in the Llynfi Valley date from the late 1820s, when the area's considerable coal and iron ore resources were developed on an industrial scale for the first time. In 1828, a 15-mile (24-kilometre) horse-drawn railway was completed between Porthcawl and Garnlwyd in the Llynfi Valley. This was the Dyffryn Llynfi and Porthcawl Railway (DLPR); it was extended to the Coegnant district near the head of the valley in 1830. The railway opened up the district and led to the formation of an iron company, which began building a works on Maesteg Uchaf Farm, near the site of the present-day town centre, in 1826. The Maesteg Ironworks Company took its name from the farm, and by 1831 two blast furnaces were in operation and the first rows of workers' housing had been completed near the Maesteg Ironworks. Around the same time, one of the first zinc smelters in Wales was set up on Coegnant Farm near the northern terminus of the DLPR.
Part of the Maesteg Sports Centre.
In 1839, work on a second, larger, ironworks commenced at Nantycrynwydd Farm on a site now largely occupied by the Tesco store and car park. The works, which became known as the Llynfi Ironworks (or "The New Works"), was started by the unsuccessful Cambrian Iron and Spelter Company and was bought by the ambitious Llynvi Iron Company in 1845. The Cornstores section of the Maesteg Sports Centre and the adjoining base of a blast furnace remain as links to the Llynfi Works and the valley's significant 19th century iron industry. The two ironworks, with associated collieries and new housing, transformed an area of scattered farms with a population of about 400 in 1821 into a growing township with a population of 4,000 by 1841.
The Cambrian/Llynfi Works attracted investment capital from a number of prominent figures of the early Victorian period, including the poet William Wordsworth, who was a Cambrian shareholder in the early 1840s, the gin distiller Sir Felix Booth, and the writer and radical politician Dr John Bowring. Bowring invested heavily in the Llynfi Works in the mid-1840s and, for a number of years, that part of the valley around his works was known as Bowrington. During his association with the Maesteg district, he campaigned in Parliament for a decimal system of coinage and was largely responsible for the introduction of Britain's first decimal coin, the florin or two shilling piece (now the ten pence piece). John Bowring lost his capital in the trade depression of the late 1840s, although the iron company continued trading. After his Llynfi venture, John Bowring became British Consul in Canton, China, and was Governor of Hong Kong from 1854 to 1859.
The iron industry in Maesteg continued, with varying degrees of success, until wrought iron making was replaced by the manufacture of cheaper, mass-produced steel during the 1870s. In its heyday, after the opening of the broad gauge, steam-hauled Llynfi Valley Railway in 1861, the Llynfi Works had a reputation for producing high-quality iron. In the mid-Victorian period there was a flourishing export trade to Southern Italy and Turkey; rails were exported to the United States and Llynvi "Navy Quality" No.3 Cable Iron was highly regarded by the makers of Admiralty-tested anchor chains. However, as the Llynfi site could not be adapted for the production of steel, iron making ceased in the Maesteg area in 1885.
During the mid-1880s, with the closure of the Llynfi Works and its associated collieries, the Maesteg district, with a population of about 10,000, faced an uncertain future. However, the local coal industry then began to expand with the formation of North's Navigation Collieries Ltd in 1889. The colliery company was led by Colonel North, the "Nitrate King". In 1900, another company, led by Sir Alfred Jones of the Elder Dempster shipping line, also developed collieries in the valley. Due to the expansion programme set in motion by the two mining companies, two of the local, former iron company collieries (Coegnant and Garth) were modernised, and two new large collieries were sunk at Caerau and St John's (Cwmdu). With the development of the coal industry, the local population increased from about 10,000 in 1891 to almost 30,000 in 1921.
Between 1890 and 1925, the valley gained a worldwide reputation as a producer of Admiralty-grade steam coal, high quality coking coal and what was regarded as the best house coal in South Wales. Due to the quality of the steam coal, North's Imperial Navigation coal was included on the prestigious Admiralty List of the twenty–six best Welsh steam coals. In 1908, the Cunard liner Mauretania was entirely fired by Llynfi coal when the ship established a new record for crossing the Atlantic. By the early 1920s there were over 7,000 miners at work in the valley. However, as the area depended to such a large extent on the coal export trade, it was seriously affected by the trade depression of 1928–38. During that period of acute poverty and large-scale unemployment, the population of the Llynfi Valley decreased by almost a third as many left the district to seek employment in the new light industries growing up in areas such as West London and the English Midlands.
For many years after the Second World War, the local coal industry employed well over 2,000 workers and new jobs were created in local government-built factories and in new industries in the Port Talbot and Bridgend journey-to-work areas. Due to the buoyant coal industry and the success of the new factories during the years 1950–75, the population of Maesteg and district stabilised at about 20,000, roughly the figure today. With the creation of more jobs in the Bridgend and Port Talbot districts, the Llynfi Valley gradually became a residential area, a process which speeded up with the terminal decline of the coal industry during the period 1977 to 1985.
Llynfi Valley metal-working centres
Name
In Production
Maximum Workforce
Coegnant Spelter (zinc) Works
1830–1847
95 in 1839
Maesteg Iron Works
1828–1860
561 in 1841
Llynfi Iron Works
1839–1885
2,000 in 1870
Llwydarth Tinplate Works
1868–1900
470 in 1886
Llynfi Valley collieries
Name
Sinking Commenced
Year of Closure
Maximum Workforce
Garth
1864
1930
1,007 in 1907
Oakwood (Davis's Pit)
1868
1928
495 in 1899
Coegnant,
1881
1981
2,182 in 1914
Caerau
1890
1977
2,432 in 1922
Maesteg Deep
1868
1930
671 in 1910
St John's (Cwmdu)
1908
1985
1,479 in 1920
