The "Dog House"
The "Dog House" was a little fiberglass room that looked like an ice-fishing hut. It was about four feet in diameter and housed a quarter of a million dollars worth of hi-tech digital recording equipment. (that's in 1979 dollars!)
From the Dog House, I'd communicate with two helicopters (one for the survey crew and one for the main crews) and about a twenty people on the crew.
We'd lay out about a mile of cable and stick microphones ("*Jugs") in the ground every four hundred and forty feet.
Throughout the day, we'd blow up dynamite in the middle of the cable (where the Dog House was), record the vibrations and then move the cable forward.
The back crew would roll up one four hundred foot cable and all the Jugs after every shot. They tied them up and left them on the ground for the helicopter to retrieve and shuttle up to the front crew who was responsible for laying down the cable and Jugs.
Most of the time it was fairly routine, but occasionally the blast would set off a fire and we'd burn three hundred acres of pristine forest in Utah before losing our permit and getting kicked out of the state.
* the folks that stick the little microphones into the ground are called Juggies and they have a Juggy Convention every year to celebrate.
See: What is a Doodlebugger.