NASCO-OP has everything you need to keep Radioactive materials out of your facility! Start at the gate with Ludlum's 4525 Gate Monitor systems. This will identify any radioactive material in a truck load before it ever hits the ground, helping you reject loads outright! Don’t have the room for gate monitors? That’s ok because we offer a wide range of handheld tools that will alarm you of any radioactive materials as well! Big or small, NASCO-OP and LUDLUM have the tools to not only make sure your loads are accepted at the mill, but also to keep your yard safe.