Abertysswg

Alternative Name: Abertyswg
Morphology: aber+tyswg as in the personal name Tyswg
Phonetic: abb-airr-tuss-oog

This means "mouth of the river Tyswg" – the name of the stream that comes down from the hill above and joins the Rhymney River near the village. The local pit was in operation from 1897 1969, opening in 1897 and originally called Pwll Llaca Pit. The McLaren Colliery later re-used the shaft before it was eventually renamed Abertysswg and until it closed in 1969, the pit produced steam coal for the steel industry.