July 19 (Reuters) - Niko Resources Ltd NKO.TO :
* Appointment of Christopher H. Rudge as new chairman of board, effective immediately
* Niko Resources Ltd. Announces board and management changes
* Kevin J. Clarke resigned as chairman of board, director, and interim chief executive officer, effective immediately
* Appointment of Robert S. Ellsworth Jr as interim chief executive officer of company, effective immediately. Source text for Eikon: Further company coverage: NKO.TO
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