Invert Signal With Op Amp?

You mean the OP that disappeared ?
That OP ?
If you draw an imaginary line between the lumber mill and the town and place the Antinoise amplifier
ON that line at a distance some small fraction of the total distance (ie < 0.1 % ) it starts to seem
more and more plausible. If you put the Antinoise
system on a long flat bed truck, with a generator
for testing and test it and various distances from the town, there is probably some optimum distance at which the cancellation works best.

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If you say so. I think if it were a viable technology it would have been production engineered by now and used widely.

Sensibly. :rofl: