Botswana Exports of clays, andalusite, kyanite, sillimanite, mullite, chamotte, dinas earths to Greece was US$4 during 2022, according to the United Nations COMTRADE database on international trade. Botswana Exports of clays, andalusite, kyanite, sillimanite, mullite, chamotte, dinas earths to Greece - data, historical chart and statistics - was last updated on May of 2024.