§ Mr. Shortasked the Secretary for Mines (1) the number of persons employed in the coal industry of Yorkshire in 1925, and each year to date;
(2) the average daily output per person employed in the Yorkshire coalfield in 1925, and each year to date;
(3) what percentage of the total output of the Yorkshire coalfield was produced by machine mining in 1925, and each year to date?
§ Captain CrookshankFollowing is the information: