 This work was completed on 30 June 1848.In 1851 2,900 tons of finished slate was produced by Llechwedd and shipped over the FfR and the company moved its offices to Porthmadog, the terminus of the railway.There a slate wharf dedicated to Llechwedd was built in 1853 where the quarry's products were trans-shipped to a fleet of sailing boats for transport to their markets.