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Petra Diamonds names new nonexecutive chairman

London-listed Petra Diamonds Ltd. named Peter Hill nonexecutive chairman to replace founder and Chairman Adonis Pouroulis, who will step down on March 31, 2020.

Hill will be appointed as nonexecutive director and chairman-designate, effective Jan. 1, 2020.

Hill is the nonexecutive chairman of geotechnical contractor Keller Group PLC and building products company Volution Group PLC. He began his career in the gold division of Anglo American PLC, according to a Dec. 17 release.

In early December, a power crisis in South Africa forced Petra to shut down its Cullinan, Finsch and Koffiefontein diamond mines.