Katie Mummah
@nuclearkatie.com
Nuclear engineer. nuclear: reactors, history, waste, nonproliferation, humor. "Tells uranium's life story". Lives in New Mexico. Formerly UW-Madison & UIUC. Outdoors when I'm not working. Views mine alone, likes/rt not endorsements. she/her
Pinned
Reposted by Katie Mummah
DOG AT THE OLYMPICS
FULL COMPETITION HIGHLIGHTS
FULL COMPETITION HIGHLIGHTS
February 18, 2026 at 1:26 PM
DOG AT THE OLYMPICS
FULL COMPETITION HIGHLIGHTS
FULL COMPETITION HIGHLIGHTS
Reposted by Katie Mummah
Every day I learn about another new nuclear startup (derogatory)
November 25, 2025 at 5:12 PM
Every day I learn about another new nuclear startup (derogatory)
Reposted by Katie Mummah
One thing that may dramatically shake up our political life on this planet is the advent of a strong new El Niño. (Also our, you know, life life)
billmckibben.substack.com/p/an-el-nino...
billmckibben.substack.com/p/an-el-nino...
An El Niño is brewing
And with it the next, pivotal, chapter of the climate fight.
billmckibben.substack.com
February 17, 2026 at 1:29 PM
One thing that may dramatically shake up our political life on this planet is the advent of a strong new El Niño. (Also our, you know, life life)
billmckibben.substack.com/p/an-el-nino...
billmckibben.substack.com/p/an-el-nino...
"The Cuyahoga River used to catch fire. It doesn’t anymore, because people decided that they wouldn’t let it. That is the lesson of Cuyahoga River National Park."
open.substack.com/pub/national...
open.substack.com/pub/national...
Lessons from the "worst" national parks: Cuyahoga Valley
How a much-maligned national park can remind you of your role in defending public lands
open.substack.com
February 17, 2026 at 5:20 PM
"The Cuyahoga River used to catch fire. It doesn’t anymore, because people decided that they wouldn’t let it. That is the lesson of Cuyahoga River National Park."
open.substack.com/pub/national...
open.substack.com/pub/national...
Reposted by Katie Mummah
The $38.3 billion they are going to spend for interment camps could fund the annual budget of NASA, the EPA, and all clean energy R&D at the Department of Energy—combined.
Breaking news: ICE expects to spend $38.3 billion on its plan to acquire warehouses across the U.S. and retrofit them into immigrant detention centers that can hold tens of thousands of people, according to agency documents.
ICE plans to spend $38.3 billion turning warehouses into detention centers
ICE plans to spend $38.3 billion converting warehouses into detention centers, according to planning documents, more than the annual budgets of 22 states.
www.washingtonpost.com
February 14, 2026 at 3:14 AM
The $38.3 billion they are going to spend for interment camps could fund the annual budget of NASA, the EPA, and all clean energy R&D at the Department of Energy—combined.
Reposted by Katie Mummah
this is truth. Never, ever, EVER make (let alone sell) physical items that have this particular iconography on them.
Safety-related lulz in general, but this one in particular.
Do Not Upset The Professionals.
Safety-related lulz in general, but this one in particular.
Do Not Upset The Professionals.
Do you want to invite an investigation from three letter agencies and potential terrorism charges? Pictures are things to laugh about on the internet, real world replicas can cause a world of problems
February 12, 2026 at 12:27 AM
this is truth. Never, ever, EVER make (let alone sell) physical items that have this particular iconography on them.
Safety-related lulz in general, but this one in particular.
Do Not Upset The Professionals.
Safety-related lulz in general, but this one in particular.
Do Not Upset The Professionals.
Do you want to invite an investigation from three letter agencies and potential terrorism charges? Pictures are things to laugh about on the internet, real world replicas can cause a world of problems
February 12, 2026 at 12:20 AM
Do you want to invite an investigation from three letter agencies and potential terrorism charges? Pictures are things to laugh about on the internet, real world replicas can cause a world of problems
Getting into lithium just so I can make 6 7 jokes
February 12, 2026 at 12:08 AM
Getting into lithium just so I can make 6 7 jokes
There should be secure facilities where you're allowed to get drunk BUT you can only go to the one where everyone else has the same level of clearance and need to know as you
The exception to this is if the strip club is a SCIF.
January 30, 2026 at 3:01 PM
There should be secure facilities where you're allowed to get drunk BUT you can only go to the one where everyone else has the same level of clearance and need to know as you
Reposted by Katie Mummah
The exception to this is if the strip club is a SCIF.
January 29, 2026 at 2:25 PM
The exception to this is if the strip club is a SCIF.
Reposted by Katie Mummah
Incredible things happening in r/SecurityClearance
January 29, 2026 at 2:11 PM
Incredible things happening in r/SecurityClearance
Sometimes I try to explain being a poaster to normal people at work and I always regret it
January 29, 2026 at 3:47 AM
Sometimes I try to explain being a poaster to normal people at work and I always regret it
In general I'm pretty supportive of the idea of colocating multiple nuclear fuel cycle facilities in one place. Curious to see where this DOE branding of "Nuclear Lifecycle Innovation Campuses" heads
sam.gov/workspace/co...
sam.gov/workspace/co...
Sam Acquisition 360
sam.gov
January 29, 2026 at 3:17 AM
In general I'm pretty supportive of the idea of colocating multiple nuclear fuel cycle facilities in one place. Curious to see where this DOE branding of "Nuclear Lifecycle Innovation Campuses" heads
sam.gov/workspace/co...
sam.gov/workspace/co...
Reposted by Katie Mummah
Reposted by Katie Mummah
There was a chance for a real discussion on whether new companies were at a disadvantage compared to the legacy designers and how best to handle that.
When your backers are all the tech bros who are happy to pull the profit ladder up behind them, it's clear you don't really want THAT discussion
When your backers are all the tech bros who are happy to pull the profit ladder up behind them, it's clear you don't really want THAT discussion
Secretly rewriting rules is not how the nuclear industry builds trust. Allowing microreactor developers to employ a move fast and break things ethos is not good for anyone except their investors short term pocketbooks. Not good for the environment, the public, even the nuclear industry
EXCLSUVIE: The Trump administration has secretly rewritten nuclear safety rules and shared them with the companies they're meant to regulate, without making the new rules publicly available.
We've obtained a copy of the new rules and here's what we found.
www.npr.org/2026/01/28/n...
We've obtained a copy of the new rules and here's what we found.
www.npr.org/2026/01/28/n...
January 28, 2026 at 2:42 PM
There was a chance for a real discussion on whether new companies were at a disadvantage compared to the legacy designers and how best to handle that.
When your backers are all the tech bros who are happy to pull the profit ladder up behind them, it's clear you don't really want THAT discussion
When your backers are all the tech bros who are happy to pull the profit ladder up behind them, it's clear you don't really want THAT discussion
Reposted by Katie Mummah
“we need to get more nuclear and overcome stigma” was a real monkey’s paw
January 28, 2026 at 2:30 PM
“we need to get more nuclear and overcome stigma” was a real monkey’s paw
It's officially been a year since my defense
January 28, 2026 at 2:27 PM
It's officially been a year since my defense
Secretly rewriting rules is not how the nuclear industry builds trust. Allowing microreactor developers to employ a move fast and break things ethos is not good for anyone except their investors short term pocketbooks. Not good for the environment, the public, even the nuclear industry
EXCLSUVIE: The Trump administration has secretly rewritten nuclear safety rules and shared them with the companies they're meant to regulate, without making the new rules publicly available.
We've obtained a copy of the new rules and here's what we found.
www.npr.org/2026/01/28/n...
We've obtained a copy of the new rules and here's what we found.
www.npr.org/2026/01/28/n...
The Trump administration has secretly rewritten nuclear safety rules
The rewrite was done to speed up the construction of a new generation of nuclear reactors. Critics warn it could compromise safety and public trust.
www.npr.org
January 28, 2026 at 2:22 PM
Secretly rewriting rules is not how the nuclear industry builds trust. Allowing microreactor developers to employ a move fast and break things ethos is not good for anyone except their investors short term pocketbooks. Not good for the environment, the public, even the nuclear industry
Reposted by Katie Mummah
EXCLSUVIE: The Trump administration has secretly rewritten nuclear safety rules and shared them with the companies they're meant to regulate, without making the new rules publicly available.
We've obtained a copy of the new rules and here's what we found.
www.npr.org/2026/01/28/n...
We've obtained a copy of the new rules and here's what we found.
www.npr.org/2026/01/28/n...
The Trump administration has secretly rewritten nuclear safety rules
The rewrite was done to speed up the construction of a new generation of nuclear reactors. Critics warn it could compromise safety and public trust.
www.npr.org
January 28, 2026 at 10:23 AM
EXCLSUVIE: The Trump administration has secretly rewritten nuclear safety rules and shared them with the companies they're meant to regulate, without making the new rules publicly available.
We've obtained a copy of the new rules and here's what we found.
www.npr.org/2026/01/28/n...
We've obtained a copy of the new rules and here's what we found.
www.npr.org/2026/01/28/n...
Throwback to when I lived in the midwest and regularly volunteered at sled dog races up north
Also a flashback to Beargrease 2020 with all of Otter Run (at the time) and a bunch of us in the unruly mob
January 25, 2026 at 3:51 AM
Throwback to when I lived in the midwest and regularly volunteered at sled dog races up north
Reposted by Katie Mummah
Copy and paste the bunny and then put something else in their hand
(\_/)
(°-°)
/>☢️<
bunny says “DROP AND RUN!”
(\_/)
(°-°)
/>☢️<
bunny says “DROP AND RUN!”
January 22, 2026 at 3:24 AM
Copy and paste the bunny and then put something else in their hand
(\_/)
(°-°)
/>☢️<
bunny says “DROP AND RUN!”
(\_/)
(°-°)
/>☢️<
bunny says “DROP AND RUN!”
Hoo hoo hoo hoosiers I guess
What the heck is a Hoosier
January 20, 2026 at 4:17 AM
Hoo hoo hoo hoosiers I guess
What the heck is a Hoosier
January 20, 2026 at 3:57 AM
What the heck is a Hoosier
Related: if anyone has recommendations in the 15-60 mile range for the Gila, northeast Weminuche Wilderness (i.e. access from Creede or Lake City area), or Capitol Reef lmk!
Planning some solo backpacking trips for 2026 and I think I'll skip the trails with multiple mentions of mountain lion sightings across several years
January 18, 2026 at 4:23 PM
Related: if anyone has recommendations in the 15-60 mile range for the Gila, northeast Weminuche Wilderness (i.e. access from Creede or Lake City area), or Capitol Reef lmk!
Planning some solo backpacking trips for 2026 and I think I'll skip the trails with multiple mentions of mountain lion sightings across several years
January 18, 2026 at 3:41 PM
Planning some solo backpacking trips for 2026 and I think I'll skip the trails with multiple mentions of mountain lion sightings across several years