By Karen Schwartz
Eike Batista's struggling OGX Petróleo e Gás
Participações replaced chief executive Luiz
Carneiro in October with Paulo Amaral, the chief financial
officer, who now holds both roles. In September, José
Gustavo de Souza Costa departed as chief executive of EBX-owned
Colombian coal miner CCX, after close to a year in the job.
The moves come as EBX continues selling...
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