 |
 |
|
 |
|
 |
41 (XLI) — 1930-1931
L.T.C. Association, 41.
Labour and Output, 356.
Lagging Current, Effect, 166.
Lamps Opened at Face, 133.
Lamps, Opening and Re-lighting, 44.
Lancashire Coal President, 137.
Leeds University Extensions, 99.
Leeds University Journal, 128.
Lessons Explosions Teach, 183.
Levelling, 285.
Lever Calculations, 66.
Lighting, Mine, 99, 177, 388, 413.
Lights, Measuring, 95.
Lining, Shaft, 110, 271.
Liquefaction of Coal, 119, 309.
Liquids, Pressure on, 253.
List of Mines, 119.
Locking Lamps, 333.
Longwall, 47.
Losses on Coal, 101.
Luke, Henry, Death, 55.
Contains public sector information licensed under the 
