Her resignation followed criticism that she was missing meetings and not returning telephone calls.
His resignation followed being re-elected to a fourth term.
The resignation followed severe economic and political crises in the previous 6 to 12 months.
The resignations of other senior officials within the operations directorate may follow, the former officials said.
His resignation followed reports that the national government was planning a move to oust him.
He waited outside Thunderbird's office and told him that unless the request was immediately granted, the resignation would follow.
Johnson's resignation follows a difficult debut in which he was mocked for failing to know the national insurance rate.
Ms. Edwards's resignation follows several other management changes in the department.
The resignation followed months of rumors in the British press about management turmoil and disagreements with the company's board.
Other resignations followed, including those of the ballet board's two chairmen and the company's executive director.