Kang prepared robot duplicates to replace the slain counterparts to rule the empires of every Kang in existence. At the same time, Kang re-took his 40th-century base via his Growing Man. After the rest of the counterparts were eliminated, the prime Kang slew the rest of the Council.
Stoneware is a rather broad term for pottery or other ceramics fired at a relatively high temperature. A modern technical definition is a vitreous or semi-vitreous ceramic made primarily from stoneware clay or non-refractory fire clay.
Marble's crystals are usually larger than limestone's crystals. Like limestone, marble is usually made of calcite, so it usually fizzes gently when you put a drop of white vinegar on it. Chert: Pieces of chalky white or dark chert are sometimes mixed with limestone gravel.