Excavations at a satellite site near the Jinsha Archaeological Museum have revealed a massive jade-carving workshop dating back to 1000 BCE. The facility was dedicated to the production of ceremonial bi-disks and zhang-scepters, featuring thousands of jade fragments and specialized abrasive tools made of corundum. The discovery indicates that the Jinsha culture had achieved an industrial scale of jade production to support their elaborate ritual needs.
The workshop layout includes specialized zones for raw stone cutting, grinding, and fine polishing. Archaeologists also found evidence of water-cooling channels used to prevent the jade from cracking during the high-speed drilling process. This find provides crucial data on the technological mastery of ancient Sichuan civilizations and their sophisticated understanding of mineralogy and mechanical engineering.