Late October 2022, we replaced the 35 mesh fireclay with 40 mesh fireclay, resulting in fewer impurities and a slightly smoother texture
Flint Hills clays have been evaluated by a nationally certified toxicologist, and have been found to be in compliance with ASTM C-1023 and D-4236, and to not contain any material in sufficient quantity to be toxic or to constitute a chronic health hazard when used responsibly.