Charles Breslin, Philip Hill, Garry Jenkins and David Powell died when the Swansea Valley mine flooded.

BBC: Gleision mine deaths: Prayers for miners and families

Charles Breslin, Philip Hill, Garry Jenkins and David Powell were killed while two other miners, including Mr Powell's son, escaped and helped raise the alarm.

BBC: Gleision rethink for national mining memorial

Since then, even for such prominent statesmen as Charles Evans Hughes, George Marshall, John Foster Dulles, Henry Kissinger, and Colin Powell, the State Department has been a capstone, not a stepping stone.

ECONOMIST: Thailand's monarchy