The system works so that a reader on each dumper reads tags that are located at each soil loading and unloading place, thereby securing optimum quality in the soil production process. The installation not only verifies that Scirocco UHF has excellent reading range, but also that the readers and antennae are easy to connect with on-board computers, that they are suitable for the tough climatic environments and that they operate safely under stress from the harsh electrical environment that are common in industrial vehicles.