sentences:  Penallta Rugby Football Club is based in Ystrad Mynach.The rugby club was inaugurated by a group of miners from Penallta colliery in 1952 and moved from a number of different social addresses until it settled at Ystrad Fawr, hosting both its club and playing ground there.On 1 November 1991 Penallta Colliery shut down but the RFC continued to play under its name.