It turns out that when you have a gas line installed, it must be 18" underground. 18 inches! That's deep. For comparison: the trench for the water line has to be 12" deep.
That's all fine and good when it's in the dirt (and when it's not you having to do the digging!) but we have a large concrete pad that's about 20 feet long, between the basement where the main gas line is, to the edge of the yard.
The plumbing team had to bring a concrete saw to score straight lines (so it'll be a clean edge when it's refilled with concrete), and couple of jackhammers, and a shovel (for when they got past the concrete, and needed to continue digging in the dirt). They also had to bring a generator, since the electricians are also here today, so the power to the house has been shut off.
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