I guess CDB and Signet Coking Coal are preparing a merger between the two companies if the Funding don't progress as they thought. This could be the reason why Mr Carl Swensson, Executive Director of Geology & Mr John Shanahan, Non Executive Director resigned.
CDB therefore hired Mr. Michael Leo Stafford as a Non-Executive Director. http://investing.businessweek.com/research/stocks/people/person.asp?personId=83109416&ticker=OLH:AU&previousCapId=32373&previousTitle=OLDFIELDS%20HOLDINGS%20LTD