Three symbolic graves contained masks of unfired clay. The pressure vessel can be either fired or unfired. The stamping paddles, made of wood or pottery, were impressed into unfired clay. This keeps unfired nematocysts from firing and adding to the discomfort. Some applied the coloured slips to unfired greenware, others to fired pots. Studies show it was made from unfired mudbrick and stones from other monuments. Because a conventional chamber is slightly oversized, an unfired cartridge will enter freely. Paper clay can be used as an unfired body in craft and doll-making. Both pods ejected empty cases and unfired rounds rather than retaining them. The word "paste" is an old term for both the unfired and fired materials. As he was dying, he was found at his station gripping the last unfired round. When unfired, it varies in colour from grey to nearly black.