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Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited.
March 2007 visit by Richard Catlow, Alan Chadwick and David Pettifor for preparations on conclusion of the NRF–RS collaboration, appearing with Phuti Ngoepe in the photo—this coincided with Alan Chadwick’s 65th birthday.