As of this week, the Port of Oakland will be the first major seaport in the nation to screen all incoming cargo containers for radiation. Four years and at least $3.2 million in the making, the port's eight radiation portal monitors are advanced models of devices used in former Soviet bloc countries to prevent the spread of nuclear materials.
It's imperfect, but it's an important step and it's about damn time. For a full explanation of the system, imperfections and all, read the whole thing.
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