AH: spent several hours researching this issue yesterday. Overseas freight has tripled: so products like NZ kaolin, Grolleg kaolin, mahavir potash, and stains have seen 30-50% price increases. A few smaller ball clay mines have closed: although the large ball clay and fire clay mines are fully functional. The biggest issue is the ceramic tile industry both here and overseas have greatly increased demands. Lastly, the PVC (pipe) industry has been hard hit: and some areas are using clay pipe for emergency repairs. Pottery only accounts for 2-3% of the clay market: which also means we are on the bottom of the supply chain.