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Missing: radioactive capsule the size of a pea

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Introduction

Rio Tinto is a global mining company. They had a piece of machinery in Australia that needed to be fixed. Along the way, a small piece of the machine fell off the truck. It was a capsule measuring just 8 millimeters by 6 millimeters. This capsule had radioactive material that would seriously harm anyone who happened to pick it up. So Rio Tinto had to search a 1,400 kilometer highway to find something less than a tenth the size of an AirPod.

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