The area at the head of the Newport Valleys, from
Tredegar to
Pontypool, was rich in minerals: coal and iron, and limestone. The development of iron smelting processes in the 18th century led to a massive upsurge in industrial output, and the products of the industry needed to be transported to market. The roads and other communication systems in the 18th century were poor, and the minerals were conveyed to a watercourse on the backs of pack animals, at considerable expense. The watercourse closest at hand for the purpose was the
River Usk at
Newport, and it was to that point that the journey was made. Onward transport by ship from there was relatively easy. The difficulty and expense of the overland part of the journey resulted in the promotion of the
Monmouthshire Canal Navigation. This was authorised by the
Monmouthshire Canal Navigation Act 1792 (
32 Geo. 3. c. 102) and opened in stages from 1796. It extent was from
Pontnewynydd, north-west of Pontypool, to Newport, and from
Crumlin to Newport. Both arms of the canal were eleven miles long. The canal did not connect into the Usk at Newport, at Crindau, north of the town, and to a basin near Llanarth Street (close to the present-day Charles Street). The canal company, or the coalowners and ironmasters using the canal, were authorised to make tramroads from any pit within seven or eight miles of the canal, to bring their output to the canalside. The Monmouthshire Canal Navigation was extremely successful, and it obtained an amending act of Parliament, the
Monmouthshire Canal Navigation Act 1802 (
42 Geo. 3. c. cxv), allowing it to make additional wharves on the banks of the River Usk to enable cargoes to be transferred to ships for export. The canal was to be extended a mile and a quarter down the river from Llanarth Street, the original termination, to Pillgwenlly; the cost was said to be £100,000. Work was begun in 1806. ==Town Dock==