 Wedgwood remained the major recipient of the ball clay until 1815, after which trade was established with other pottery manufacturers and other ports.James' son, George Templer built the Haytor Granite Tramway to connect his granite quarries at Haytor Rocks to the canal basin at Ventiford.It opened on 16 September 1820, and for the next 40 years, the traffic in granite supplemented the ball clay trade.