Pit props
Subtitle: report of Henry Louis, Esq., M.A., D. Sc., &c., &c., professor of mining at Armstrong College, Newcastle-on-Tyne, upon pit props from Newfoundland
Contributors: Mining Association of Great Britain
Publisher: Mining Association of Great Britain
Published: 1914
Place of publication: London?]
Language: eng
Notes: Caption title.

"Published by permission of the Board of Trade."