Mr Fisk said a "number'' of staff were needed leading up to the sale of the mine, but he could not say if all 17 would be kept on.
"We will try to enter a sale and purchase agreement before Christmas. Settlement will be next year.''
Mr Whittall, an Australian, joined Pike River Coal Ltd in February 2005 as mine manager, responsible for planning and developing the mine from the turning of the first sod. He reported to former general manager Gordon Ward.
In January 2010, he relocated from Greymouth to the Wellington head office, and in October 2010 was appointed chief executive, after Mr Ward left.
In a statement through his lawyers, Mr Whittall said he had continued to seek to do his best for the company and his staff, as permitted in extremely difficult circumstances.
"Having chosen not to take voluntary redundancy and leave the company or this country for other opportunities, Mr Whittall's loyalty to Pike and commitment to trying to determine what caused the tragic explosion on November 19, 2010 has been unwavering,'' his lawyer said.
Coal miners were renowned for their resolve and toughness, yet it was with ``deep sadness'' that Mr Whittall left Pike River.
Mr Whittall intends to remain in New Zealand to continue with the current inquiries.