stulm

English

Etymology

From German Stollen (“tunnel”).

Noun

stulm (plural stulms)

(UK, dialect) A shaft, conduit, adit, or gallery to drain a mine.
- 1881, United States Bureau of Foreign Commerce, Commercial Relations of the United States: Reports from the Consuls of the United States on the Commerce, Manufactures, Etc., of Their Consular Districts‎^[1], U.S. Government Printing Office, page 494:
  … they have to advance the lower stulm on each side of the tunnel … the advancement of the stulm, … it must be finished, including the graveling.
- 1932, Official Gazette of the United States Patent Office, Volume 414‎^[2], Digitized edition, U.S. Government Patent Office, published 2008, page 709:
  … an upper chamber, a stulm, a lower chamber in open communication with the lower end of the head shaft, and arranged at substantially the level of the stulm, and a downwardly extending sill divinding the lower end of the shaft from the stulm so that the lower chamber is at normal pressure and the shaft is at negative pressure.

References

Dictionary Geotechnical Engineering/ Wörterbuch GeoTechnik: Vol 1: English - German/Englisch - Deutsch, Herbert Bucksch, 1997, page 595, stulm

Part or all of this entry has been imported from the 1913 edition of Webster’s Dictionary, which is now free of copyright and hence in the public domain. The imported definitions may be significantly out of date, and any more recent senses may be completely missing.
(See the entry for “stulm”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.)