 They're collected and put in sacks and will need to be taken quickly to the Hever Silk Factory on the road to Urgench, the city that gave its name to organza silk. I visit and watch as each sack is emptied onto a conveyor belt, taking the cocoons through a hot air chamber that kills the pupa inside. Cocoons are then soaked in hot water to loosen the fibres, which are unravelled and spun into thread. In another room, deafening mechanical looms create wonderfully gauzy organza.