The Google Earth photo of the quarry shows some big diggers in action there. Looking at it again, landfill does make more sense.
Aircraft seem to be hard to pick out. They don’t rattle the windows and shake the ground like helicopters.
We get big, twin rotor ones, mostly forestry, occasional military. You can tell these from the spectrogram, with three frequencies showing up:
Single rotor ones often have just a single trace, sometimes two when the tail rotor shows up.
The other one that puzzled me for a while is the spin cycle on our washing machine - it’s 30m away from the seismometer, but still gives a clear trace:
These are very different from an eathquake - example M5.0 500km away, out to sea:
Low frequency noise, often with a very sharp leading “edge” as whatever is under tension finally slips.
Of course, I picked out the clear, easily identifiable ones here …
As mentioned before, for earthquakes, it’s hard to beat the mobile app.