The rich history of PIRMI began with founder Curt Rocca in 1954. What began as a single operating plant has grown into one of the largest, most successful rice mills in the state of California. After two additional plants, the mill, and a packing facility were added to the mill in 1964, the following decade led to Iris expansion into West-Central Mississippi. Today, PIRMI is owned by Farmers' Rice Cooperative, supporting excellence and environmentally sound production from rice milling to production, packaging, and transportation processes.