Science: Hot Factory

Among the low, brown hills of eastern Tennessee stands a factory whose total product for 1949 weighed less than 1/10,000th of an ounce. The weight of its average shipment is less than that of the graphite in a penciled signature; the container usually weighs a billion times more. Yet the products of this factory, the radioisotope plant at the Oak Ridge National Laboratory, have already revolutionized many branches of science.

Last week the laboratory showed off some new and weird equipment designed to make isotope production both faster and safer. The isotopes are...

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