asked the Minister of Fuel and Power what action he proposes to take on the recommendation of the Deputy Chief Inspector of Mines in his recent report to him on the Durham Colliery explosion in August last, that the searching of persons for matches, lighters, etc., should be made compulsory in all mines or parts of mines in which safety lamps are used; and how many explosions of fire damp in British mines, involving how many deaths, have been due to matches, lighters, etc., during the past To years.