How often should you audit aggregate inventory? A quarry manager’s guide

Most quarries and aggregate operations should audit stockpile inventory monthly, because monthly measurement catches drift before it becomes a write-off and stays affordable with a drone workflow, while quarterly is usually too infrequent to protect the number and high-throughput or high-value sites can justify weekly. The piece works through the money math, showing how a 10,000-ton gap across sites hides $60,000 to $70,000 in inventory, reframes audit frequency as risk management rather than overhead, and explains how a drone workflow makes monthly cadence realistic. The post How often should