Underground Plan of the Dennis Section, Gresford Colliery, September 1934.
|Escape route of the six survivors||Sir Henry Walker's preference. Sir Stafford Cripps put forward this location as a possibility||Joseph Jones's preference. Sir Stafford Cripps put forward this location as a possibility||Direction of ventilation air around the workings||Return airway|
|John Brass's preference. John Charlton Divisional Inspector of mines, also put this location as a possibility.||Hartley Shawcross put forward this location as a possibility||Intake airway||Coal face|
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