01061cam a22002771 4500 ca 28000148 DLC 20260227111119.0 860401s1927 dcuaf 000 0 eng ca 28000148 (OCoLC)13368970 DLC WaU OCoLC DLC premarc n-us--- TN802 .A5 American Mining Congress. Handbook--standard and approved American coal mining methods--practice--equipment. [Washington, D.C., 1927] 2 p. l., [293] p. incl. illus., fold. plates, tables (part fold.) diagrs. (part fold.) 18 cm. 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." Coal mines and mining. 16330 16330