Massive bump, the map has been replaced with this one which I started a couple years ago and has almost double the locations and has Tooele county incorporated within the map. Most recently I found about 8 more sirens in Tooele county, one being a 2810 west of Grantsville and the rest being at Dugway Proving Grounds. If you find a missing location, please let me know! I'm always looking for more sirens to add to my map.
The red pins represent installed sirens, and the blue pins represent removed sirens, which i'm keeping up for historical sake.
https://www.google.com/maps/d/u/0/edit? ... 286074&z=7