21. It was established for ironstone mining from about 2003 by Portman Limited. 22. Out here all is farmland, over former Ironstone workings. 23. Your English platter is ironstone that was invented by Miles Mason around 1815. 24. Dozens of ironstone mines and several short-lived blast furnaces were constructed. 25. Between 1856 and 1926 high-grade magnetic ironstone was mined in Rosedale. 26. However, some high level ironstone blocks and limestone balusters have weathered badly. 27. Previously the site was used for ironstone extraction for buildings in the village. 28. The park contains a ford and the remains of the old ironstone railway. 29. Many of its buildings are built of local ironstone . 30. The large ironstone quarries have not wholly destroyed the appearance of the district.
