In the 1680's there were two copper smelting works one in Bristol the other at Upper Redbrook in the Forest of Dean. A lot of the slag waste was dumped in the River Avon, used on railway tracks and on roads. After causing problems with navigation it was banned from being dumped in the river. Someone had a bright idea to make bricks out of the slag. It can be seen in buildings and walls around the Severn and the Wye and in my garden.
|The River Severn at Newnham.|