Plumming

• (n.) The operation of finding, by means of a mine dial, the place where to sink an air shaft, or to bring an adit to the work, or to find which way the lode inclines.
Found on http://thinkexist.com/dictionary/meaning/plumming/

Plumming

Plum'ming noun [ See Plumb .] (Min.) The operation of finding, by means of a mine dial, the place where to sink an air shaft, or to bring an adit to the work, or to find which way the lode inclines.
Found on http://www.encyclo.co.uk/webster/P/110
No exact match found