Tiles were the ro making the tiles was a major operation because erm when they first tried to make the tiles they tried they dug a hole big hole at Rawcliffe and they they tried to make  forty thousand tiles, line them all up in the pit and they brought something like forty tonnes of dry wood chippings from the erm saw mills in er  forest but they couldn't quite get it hot enough so the whole lot had to be thrown away  do again.