Handbook--standard and approved American coal mining methods--practice--equipment. - American Mining Congress ([Washington, D.C., 1927)
Cover-title.
Loose leaves.
Part of the plates, diagrams, and tables are numbered as 1 page.
Paged at foot A-1 to A-28, 1 leaf, B-1 to B-51, etc.
"Published by the American Mining Congress ... Washington, D. C., under the supervision of its National Standarization Division, Coal Mining Branch."
Keywords: Coal mines and mining