This yellow siren (or smokestack) is at that abandoned superfund chemical plant that I mentioned months ago in Lowell, NC. It is disturbing to think that such a small place would need a full on SIREN. Welllllllllll, they DID use formaldehyde and other nasty stuff there along with the following incidents:
1:formaldehyde spill in the late 1990s/early 2000s
2: Barrel fire in a filterpress that lit up some other tanks
3: ASBESTOS
4: LEAD PAINT
5: WWTP spill in 2019 (even though abandoned, due to vandals)
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Given that Sentry 3V8 is painted yellow, I would not be surprised that it was used as a Civil Defense siren rather than a ChemSpi (Chemical Spill) warning siren.
However most Civil Defense sirens were dual-tone (had two sets of opening on the rotor, such as 8/12 and 10/12), and AFAIK I think 3V8s were often 8-port.
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OH. MY. GOD. THANK YOU FOR IDENTIFYING IT! My first guess is a CD siren as it IS a small community and according to some file hopper tabs on my PC (you can find these in general talk section.) dates from 1958 (original construction) 1961 (new company comes in and tears down old buildings) and 1962 (MOST but not ALL new buildings constructed and opened for production of dyes)
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Going off of this I gathered this siren was used for these reasons:
Storms (local)
Chemical Spill (Local, onsite)
Civil Defense (the siren was installed in 1977)
Break/start day/end day whistles