Josh Mackanic left a 10-year engineering career at Pacific Gas and Electric because he kept thinking about what the utility company doesn’t know about what’s buried underground. “I had a job that got shut down because a pipe was in the excavation [that] we didn’t know about. Fortunately, we saw it before we impacted it,” he told TechCrunch. “But then there was this three-day ordeal of running around [asking] like: ‘Whose pipe is this? Can we tap it? Can we not? What’s in it?’” Mackanic eventuall...