I started Plumbing and Heating in 1971 also. All the underground was cast iron. I have a very new Reed chain soil snap cutter I've been trying to sell; guys don't know what it is! Most recently before retiring I worked as a residential boiler serviceman. Had to keep taking classes and continuing education to keep up with the electronics involved. I kept a paper map in the truck to find where I had to go...the helpers would just use GPS; then look up the solution to the problems on U-Tube. Glad I could retire!
