 The canal was supplemented by a horse-drawn tramway to Ponts Mill in 1855 and a separate tramway incline served the Par Consols mine on the hill behind the harbour.In 1860 a connection was made to the recently opened Cornwall Railway which was carried on a viaduct and embankment between the harbour and mine.The mine closed in 1869 and the main tramway was converted to locomotive haulage as the Cornwall Minerals Railway in 1874, but wagons continued to be moved by horses within the harbour complex.