The growing global economy, with developments of new technologies and national defense systems, has placed an increased importance on the so-named critical metals. There is a lack of general consensus on specifically what group of elements comprise those best defined as “critical” and are thus at greatest risk due to volatility in the global supply chain. The new volume, Critical Metals Handbook, published mainly under the direction of the British Geological Survey and edited by Gus Gunn, uses the criticality index of the 2010 European Commission to select the metals described in this book. The volume is divided into...

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