Because the world's 1½ Ib. of radium is worth some $1,500,000 an ounce and because radium can cause incurable burns, every time a tiny capsule of radium or a tiny needle-like tube of radium emanation is thrown away with a patient's dressing, sent to the laundry with towels or, on rare occasions, left inside a patient, every soul connected with the loss frantically searches for the missing stuff. Last week Britain's National Physical Laboratory offered such radium hunters a small, efficient radium locater. Sensitive to the electromagnetic gamma rays which radium continually ejects,...
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