The Railroad company has been working on the tracks within 10 miles or so of my house, mostly at overpasses. Their equipment is kept on a siding a block or so from me, they start work at 4:30 - 5:00 am. Because it's posted, I can't just walk over and peek (without getting arrested) but you know when they start.
There is one piece of equipment that spools up and at speed emits a high pitched whiny noise that just penetrates. They've moved down the track a bit and after 40 minutes or so it's better, hidden by trees. But what does that? Like a commercial wood chipper but different pitch and volume. I don't hear a big diesel pulling the train of small cars-carts away, so could it be a different type engine?
Because they're spending time at overpasses, could it be some kind of Nondestructive Testing Equipment, like Ultrasound, some crazy portable gyro fired X-Ray?
The overpasses in a 10 mile radius of me are being somethinged, dunno what. They laid down 12 X 12" square logs to make roads for big equipment.
What's that noise?
