important to note that this to be found in all reasons is III. -2- LABOUR AND PRODUCTION. 7. If coal is to be obtained in sufficient quantity for the nation's war-time needs, the two prime considerations, as ### made clear in the White Paper, are the conservation of the industry's man-power and improvement of efficiency. Man-Power. 8. At the time of the White Paper there were 708,500 men on colliery books. This figure rose to 712,800 on the 23rd January, 1943, but has since fallen to 708,000, 500 lower than it was a year ago.