 The Act allowed the canal company to build feeder railways up to in length to transport freight to the canal for transshipment.The Bryn Oer Tramway was built under this act in 1814, opening in 1815.It was a horse-worked plateway that served the Bryn Oer collieries and the limestone quarries at Trefil, dropping along its route to the canal at Talybont-on-Usk.