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The challenge: scanning vehicles and cargo for nuclear materials without slowing the flow of traffic. The solution: the EXPLORANIUM ST-20 spectroscopic radiation portal monitor (RPM). The ST-20 RPM identifies and locates nuclear material in cargo containers, trucks, railcars, and other vehicles in the normal flow of checkpoint traffic. By quickly distinguishing potential nuclear weapons material from likely benign sources, the ST-20 RPM can greatly reduce the need for manual inspections.

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