Been doing this 20 years or so. Today installed underground pedistal in new house. How are you guys digging the hole in the frozen ground. This one was frozen clay with plenty of rocks. Frost was all the way down. I have used charcoal or a kerosene heater with 1/2 of a metal drum over it. just go out there every hour or so and dig what you can. I have also used a demo hammer and just chiseled it away. Today I had to use both methods. Very time consuming. Theres gotta be an easier way!!! Thanks