Welsh Achievements - in science, technology and engineering (PDF
Welsh Achievements - in science, technology and engineering (PDF
Welsh Achievements - in science, technology and engineering (PDF
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1806 Cyfarthfa ironworks is the largest <strong>in</strong> the world until<br />
overtaken by Dowlais <strong>in</strong> 1822.<br />
1805 open<strong>in</strong>g of Pontcysyllte aqueduct, Thomas Telford’s<br />
1007ft (307 m) long multi-arch iron <strong>and</strong> masonry<br />
structure carry<strong>in</strong>g the canal <strong>in</strong> a cast-iron trough 126<br />
ft (38 m) high over the river Dee. Then the highest<br />
aqueduct <strong>in</strong> the world <strong>and</strong> rema<strong>in</strong>s Brita<strong>in</strong>’s highest<br />
aqueduct.<br />
1804 Steam locomotive built by Richard Trevithick makes the<br />
first steam railway journey <strong>in</strong> the world from Merthyr<br />
Tydfil to Abercynon.<br />
1793 World’s first iron railway bridges, at Pontycafnau <strong>and</strong><br />
Cyfarthfa.<br />
1774 John Wilk<strong>in</strong>son <strong>in</strong>vents high-accuracy bor<strong>in</strong>g of cyl<strong>in</strong>ders<br />
at Bersham, used firstly for the production of cannons<br />
<strong>and</strong> later for steam eng<strong>in</strong>e cyl<strong>in</strong>ders.<br />
1755 Pontypridd bridge completed by local mason William<br />
Edwards across the river Taff. At 140 ft (42 metres) it is<br />
the longest stone span <strong>in</strong> Western Europe.<br />
1762 World’s earliest recorded railway tunnel, L<strong>and</strong>ore.<br />
1697 The first sheet iron roll<strong>in</strong>g mill <strong>in</strong> the world opened <strong>in</strong><br />
Pontypool.<br />
1672 Completion of Tredegar House, newport, one of the<br />
f<strong>in</strong>est 17th century houses <strong>in</strong> Brita<strong>in</strong>.<br />
16th century<br />
Tidal mill built at Carew adjo<strong>in</strong><strong>in</strong>g the 13th century<br />
castle for gr<strong>in</strong>d<strong>in</strong>g corn.<br />
77<br />
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