Edward A. Falk wrote:
In ,
Phil wrote:

What we are talking about is finding a buried pipe
or electrical cable.
Telephone repair men find buried lines by the
magnetic field of the line.
Power company guys do the same. Troops in a war
zone find IEDs
by the magnetic field. ...

They have electronic equipment to do this.

The James Randi foundation has a million dollar prize waiting
for anybody who can show that dowsing works under controlled
conditions. So far, nobody's done it.

http://www.pbs.org/saf/transcripts/transcript802.htm#3

--Winston