Experience in shaft sinking with a 2ft. diameter (approx.) borehole in the Ruhr coalfield
Subtitle: N.C.B (West Midlands Division).
Place of publication: Sheffield
Language: eng
Number of pages: 13
Subjects: Coal mines and mining -- Great Britain.
Work titles: Experience in shaft sinking with a 2ft. diameter (approx.) borehole in the Ruhr coalfield