Finds at the prehistoric site of Ban Chiang indicate that silk production in northeast thailand may predate even that of China, where sericulture probably originated in about 2700 BC. in thailand, silk production was beginning to die out un til an american, Jim thompson, revived it in the 1940s. today, all manner of silk products are available, with silk shirts and sarongs popular with visitors. the silk industry is centered mostly in the northeast, due to the suitability of soil in these areas for growing mulberry bushes, the main diet of the silkworm. silk production in these areas is still based on traditional methods and comprises the stages outlined here.