Item C2 Application by Ferns Group for extension to ...
high silica content (>% at Wrotham Quarry) and a consistently narrow grain size. Silica sands at Wrotham Quarry are washed and graded and most (80%) is then dried for sale. The rest is sold moist. Silica sands are essential materials for a number of industrial applications including glassmaking, foundry castings and various heat