Try connecting a water hose to one end, and open the other. Let the water do
the work. Be sure to arrange for the spilled water to come back out the
hole with the dredgings, else you undermine in areas you don't want.

"Eric" wrote in message
news:l15Wc.167449$8_6.1934@attbi_s04...
Foes anyone have any experience trying to hammer a piece of capped
galvanized pipe under a concrete driveway? I'm wondering how far
this will work. I'd like to extend my sprinkler system to the area
on the other side of my driveway. Probably a 3/4 inch pipe will do.
Thanks
Eric





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