English

Noun

stulm ‎(plural stulms)

1. (Britain, 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, 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, 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