Inversion Documentary
@inversion-doc.bsky.social
The Unfinished Business of Pittsburgh's Air. A documentary in production by Mark Dixon. Trailer: https://youtu.be/WZ6OdXQOZDo . Website: https://inversiondoc.com .
What is this big bright light? This video mostly shows Nippon/US Steel's Edgar Thomson Plant, but I can't tell if the bright light is actually inside the plant grounds. Happened at about 8:53pm on 10/19/2025. (BreatheCam footage via @breathe-project.bsky.social and CMU Create Lab)
October 24, 2025 at 4:03 PM
What is this big bright light? This video mostly shows Nippon/US Steel's Edgar Thomson Plant, but I can't tell if the bright light is actually inside the plant grounds. Happened at about 8:53pm on 10/19/2025. (BreatheCam footage via @breathe-project.bsky.social and CMU Create Lab)
‼️#Stinkburgh Alert! Walked out my front door a few minutes ago and learned that the "moderate inversion" had yielded awful industrial smells at my house, but not until about 9am. Looks like I'm not the only one reporting. Hopefully clearing out soon, but tomo might also be bad.
October 17, 2025 at 4:14 PM
‼️#Stinkburgh Alert! Walked out my front door a few minutes ago and learned that the "moderate inversion" had yielded awful industrial smells at my house, but not until about 9am. Looks like I'm not the only one reporting. Hopefully clearing out soon, but tomo might also be bad.
Here you can see the spike on the Kennywood Hills B monitor. Anybody in that area encounter this in real-time?
October 2, 2025 at 10:52 PM
Here you can see the spike on the Kennywood Hills B monitor. Anybody in that area encounter this in real-time?
This morning there was a massive plume emitted from Nippon/US Steel's Edgar Thomson Mill in the greater Pittsburgh area. There was a massive spike in particles across the river about that time. The Allegheny County Health Dept needs to investigate. @breathe-project.bsky.social @gasp-pgh.bsky.social
October 2, 2025 at 10:52 PM
This morning there was a massive plume emitted from Nippon/US Steel's Edgar Thomson Mill in the greater Pittsburgh area. There was a massive spike in particles across the river about that time. The Allegheny County Health Dept needs to investigate. @breathe-project.bsky.social @gasp-pgh.bsky.social
‼️#Stinkburgh Alert! Strong inversion predicted for tomorrow morning in Pittsburgh. Looks like it might get worse over the weekend. Submit #SmellPGH complaints and @HealthAllegheny complaints as you encounter stench! @GASPPgh @BreatheProject @cmucreatelab
October 2, 2025 at 3:24 PM
‼️#Stinkburgh Alert! Strong inversion predicted for tomorrow morning in Pittsburgh. Looks like it might get worse over the weekend. Submit #SmellPGH complaints and @HealthAllegheny complaints as you encounter stench! @GASPPgh @BreatheProject @cmucreatelab
‼️#Stinkburgh Alert! Stench is widely reported across the Pittsburgh region today. VOC and particle levels elevated in certain areas. I decided against my morning walk because of the stench. 💩
September 28, 2025 at 2:00 PM
‼️#Stinkburgh Alert! Stench is widely reported across the Pittsburgh region today. VOC and particle levels elevated in certain areas. I decided against my morning walk because of the stench. 💩
And a monitor a little further away (this was a PurpleAir monitor - not an EPA monitor - but is on the EPA map) shows even higher levels.
September 19, 2025 at 2:55 PM
And a monitor a little further away (this was a PurpleAir monitor - not an EPA monitor - but is on the EPA map) shows even higher levels.
Even the local EPA regulatory monitor showed a notable spike last night.
September 19, 2025 at 2:55 PM
Even the local EPA regulatory monitor showed a notable spike last night.
Here are local PurpleAir monitors near the plant showing significant particle pollution around that time. Winds were very slow.
September 19, 2025 at 2:55 PM
Here are local PurpleAir monitors near the plant showing significant particle pollution around that time. Winds were very slow.
What in the world happened at Nippon/US Steel's Edgar Thomson facility last night? #AirQuality Footage thanks to @breathe-project.bsky.social and CMU CREATELab. It went on for about 3 HOURS. Local air monitors seem to correlate. @gasp-pgh.bsky.social also reported high H2S last night. 🤬 🧵
September 19, 2025 at 2:55 PM
What in the world happened at Nippon/US Steel's Edgar Thomson facility last night? #AirQuality Footage thanks to @breathe-project.bsky.social and CMU CREATELab. It went on for about 3 HOURS. Local air monitors seem to correlate. @gasp-pgh.bsky.social also reported high H2S last night. 🤬 🧵
And here is some BreatheCam footage from US Steel's Edgar Thomson Mill between about 8am and 8:30am. Not sure if it has any relation to the smells, but something was emitted from that plant about an hour before the levels spiked. (Footage thx to @breathe-project.bsky.social and CMU CREAT Lab)
September 12, 2025 at 2:11 PM
And here is some BreatheCam footage from US Steel's Edgar Thomson Mill between about 8am and 8:30am. Not sure if it has any relation to the smells, but something was emitted from that plant about an hour before the levels spiked. (Footage thx to @breathe-project.bsky.social and CMU CREAT Lab)
VOC's are still spiking.
September 12, 2025 at 2:10 PM
VOC's are still spiking.
Now VOC’s are spiking:
September 12, 2025 at 1:15 PM
Now VOC’s are spiking:
🚨#Stinkburgh Alert! Suffocating burnt plastic smell in Squirrel Hill South right now. Winds coming from the south per my new little Tempest weather station. Not sure what it is. Ugh. SmellPGH shows I’m not the only one smelling it.
September 12, 2025 at 1:14 PM
🚨#Stinkburgh Alert! Suffocating burnt plastic smell in Squirrel Hill South right now. Winds coming from the south per my new little Tempest weather station. Not sure what it is. Ugh. SmellPGH shows I’m not the only one smelling it.
🚨#Stinkburgh Alert! Last night and much of today was pretty stinky. My house saw high VOC's, too. How about for you? Report smells to the SmellPGH app and ACHD website. Tonight isn't looking much better. Ugh. 🤢 #airquality
September 2, 2025 at 11:41 PM
🚨#Stinkburgh Alert! Last night and much of today was pretty stinky. My house saw high VOC's, too. How about for you? Report smells to the SmellPGH app and ACHD website. Tonight isn't looking much better. Ugh. 🤢 #airquality
🚨#Stinkburgh Alert! Lots of stench reported last night. How are you doing?
August 28, 2025 at 12:15 PM
🚨#Stinkburgh Alert! Lots of stench reported last night. How are you doing?
I visited the area near US Steel's Clairton Coke Works today after the #explosion. Lots of emergency vehicles and press all over the place. Not to mention haze above the plant and what appeared to be semi-opaque emissions coming out of a couple of stacks. www.flickr.com/photos/96025...
August 12, 2025 at 12:15 AM
I visited the area near US Steel's Clairton Coke Works today after the #explosion. Lots of emergency vehicles and press all over the place. Not to mention haze above the plant and what appeared to be semi-opaque emissions coming out of a couple of stacks. www.flickr.com/photos/96025...
Explosion reported at Clairton Coke Works today. See the #BreatheCam footage below (footage courtesy of the CMU CREATE Lab and Breathe Project
@breathe-project.bsky.social). #AirQuality #safety
@breathe-project.bsky.social). #AirQuality #safety
August 11, 2025 at 4:29 PM
Explosion reported at Clairton Coke Works today. See the #BreatheCam footage below (footage courtesy of the CMU CREATE Lab and Breathe Project
@breathe-project.bsky.social). #AirQuality #safety
@breathe-project.bsky.social). #AirQuality #safety
Another Inversion Doc pre screening event! I'll be showing clips I've shared at other pre-screening events this year. Protect PT is hosting this Lunch & Learn event on August 26 at noon on Zoom. See you there! secure.everyaction.com/6v-EYfEhh0Gu...
July 29, 2025 at 8:16 PM
Another Inversion Doc pre screening event! I'll be showing clips I've shared at other pre-screening events this year. Protect PT is hosting this Lunch & Learn event on August 26 at noon on Zoom. See you there! secure.everyaction.com/6v-EYfEhh0Gu...
Just saw this on my drive home today. When will US Steel/Nippon Steel be forced to stop doing this?
😢🏭 #airquality Video credit to BreatheCam by the CREATE Lab at CMU and @breathe-project.bsky.social
😢🏭 #airquality Video credit to BreatheCam by the CREATE Lab at CMU and @breathe-project.bsky.social
July 13, 2025 at 10:19 PM
Just saw this on my drive home today. When will US Steel/Nippon Steel be forced to stop doing this?
😢🏭 #airquality Video credit to BreatheCam by the CREATE Lab at CMU and @breathe-project.bsky.social
😢🏭 #airquality Video credit to BreatheCam by the CREATE Lab at CMU and @breathe-project.bsky.social
🚨#Stinkburgh Alert! Elevated particles and stench today. And it’ll be extremely hot later today with elevated ozone. Be careful out there!
June 24, 2025 at 12:26 PM
🚨#Stinkburgh Alert! Elevated particles and stench today. And it’ll be extremely hot later today with elevated ozone. Be careful out there!
We currently have more PM2.5 pollution than anywhere else in the United States. Some unholy brew of wildfire smoke and local pollution. It's awful outside and very hazy. Please be careful and crank those air filters! #airquality #wildfiresmoke
June 7, 2025 at 9:57 PM
We currently have more PM2.5 pollution than anywhere else in the United States. Some unholy brew of wildfire smoke and local pollution. It's awful outside and very hazy. Please be careful and crank those air filters! #airquality #wildfiresmoke
🚨🚨#Stinkburgh Alert‼️ Worst this week. Elevated VOC’s, particles, and stench reports. Make your own report via SmellPGH app. 🤮😷
June 4, 2025 at 11:58 AM
🚨🚨#Stinkburgh Alert‼️ Worst this week. Elevated VOC’s, particles, and stench reports. Make your own report via SmellPGH app. 🤮😷
🚨#Stinkburgh Alert! Elevated VOC’s, particles, and stench reports. Make your own report via SmellPGH app.
June 3, 2025 at 11:41 AM
🚨#Stinkburgh Alert! Elevated VOC’s, particles, and stench reports. Make your own report via SmellPGH app.
#Stinkburgh Alert! Polluted/smelly air today in Pittsburgh. More likely this week. Watch out for some light impact of wildfire smoke from Canada on our regional air quality this week, though only time (and wind) will tell if we get hit worse in the coming weeks. #SmellPGH
June 2, 2025 at 2:30 PM
#Stinkburgh Alert! Polluted/smelly air today in Pittsburgh. More likely this week. Watch out for some light impact of wildfire smoke from Canada on our regional air quality this week, though only time (and wind) will tell if we get hit worse in the coming weeks. #SmellPGH