Birchgrove, Swansea Birchgrove, Swansea Birchgrove () is a large village and community in the City and County of Swansea, Wales. It does not have a community council. The village is situated some 4.5 miles (7 km) north-east of Swansea city centre, between the flood plain of the River Tawe and Mynydd Drumau (Drummau Mountain). Birchgrove also borders Neath Port Talbot. The community of Birchgrove, which includes the village of Birchgrove itself, Lon-las, and parts of Glais, had a population in 2008 of 5,807. Long vistas of the Swansea, Neath and Blaengwynfi valleys are to be had from the top of Mynydd Drumau,
Lower Swansea valley river and continued in production until 1745. (It reopened as a pottery in 1764.) In 1737, the White Rock copper works at Pentrechwyth was established. By 1780 there were three copper works on the east bank of the river: White Rock, Middle and Upper Bank. On the west bank there was also one at Forest. By 1800 nine copper smelters were in production in the valley. By 1860 the lower Swansea valley was smelting two thirds of the copper ores imported to Britain, and changes in the output and economy of the Swansea valley had a significant effect on global