Excavations at a newly discovered site in Sirsa have revealed what archaeologists are calling an industrial-scale weights factory. The site contains hundreds of chert blocks in various stages of processing, alongside finished cubical weights that adhere strictly to the Harappan binary and decimal systems.
This discovery provides concrete evidence of the centralized state control over trade and commerce in the Indus Valley Civilization. The presence of specialized drilling tools and polishing vats suggests that this site was a regional hub for the production of trade instruments distributed across the Saraswati-Indus river system.