"DanG" wrote in message
newsxMTc.5863$vj.2393@okepread03...
According to my good mining friend out of Kalispell, Montana, a
single jack is one man swinging a hammer with one hand. A double
jack required 2 hands on the hammer and another man to hold the
drill.

I would like to know the etymology of jack in this one.

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Keep the whole world singing . . . .
DanG (remove the sevens)



I stand corrected. But I was right that it WAS a drilling contest.

Steve