At its essence, a lean manufacturing practice is the continual pursuit of more efficient ways to operate. Ideas are contributed by all involved in any process; they are tested for effectiveness; and the winners become standardized in the workflow. These standardized practices are reduced to their simplest elements and visual cues are placed throughout the plant to optmize integration and efficiency. RFID tracking is a natural tool for supporting the implementation of lean manufacturing practices at precast concrete plants. Here's why.