The line left the WMCQ main line near Gwersyllt, and ran through the coal mining district of the Moss Valley, with halts at Moss and Pentre and New Broughton, where it passed under the GWR Brymbo branch before turning to run parallel to it. A small halt was provided at Plas Power, nearly adjacent to the GWR halt: there was a connection between the two lines at this point where there were sidings to Plas Power colliery. The line then headed north to Brymbo on the opposite (western) side of the valley to the GWR route; a trailing connection shortly before the tiny WMCQ Brymbo station led to a short branch to Vron and its colliery. The WMCQ terminus at Brymbo was located in a gloomy, cramped and rather inaccessible spot immediately beneath the vast slag tips on which the furnaces of Brymbo Steelworks had been built.