Tin-glazing in the kiln atmosphere and therefore a flame-burning kiln. Traditional kilns were wood firing, which required the pots to be protected in the glaze and luster firings by saggars or to be fired in a muffle kiln. Except for those making luster ware, modern tin-glaze potters use electric kilns. The recrystallisation of tin oxide during the firing provides evidence of the slightly different methods of different production sites, as the crystal size, the distribution and the concentration may be influenced. For instance, the analysis of the 14th century Islamic tin glazes from eastern Spain indicates that these samples may be
Tin-Tin Kyrano that stereotypes are common but "handled with some sensitivity – all except for Tin-Tin, a literal China doll". Kate Hunt of the University of Glasgow, author of a study of the series' presentation of tobacco smoking, observes that in marked contrast with prolific smokers such as Penelope, Tin-Tin is "incongruously" and "inconsistently" seen with a cigarette in only one episode ("The End of the Road"). She writes that the character occupies a socially-ambiguous position within her home environment, appearing variously as "adopted daughter, secretary, and occasional member of the International Rescue team". In the 2004 live-action film, "Thunderbirds", in which