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Katie Mummah

@nuclearkatie.com
17K followers 2.2K following 1.8K posts

Nuclear engineer. nuclear: reactors, history, waste, nonproliferation, space, humor. "Tells uranium's life story". Lives in New Mexico. UW-Madison, UIUC alum. Outdoors when I'm not working. Views mine alone, like/rt not endorsements. she/her

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Katie Mummah @nuclearkatie.com · 9h
Today I learned that I get pretty fired up when someone questions my experience in cold weather
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Katie Mummah @nuclearkatie.com · 27/09/2026
They don't know how to run unified command?
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Katie Mummah @nuclearkatie.com · 26/09/2026
If you recreate in the woods you should want all the different agencies in New Mexico from local to state to tribal to be working together when folks are lost or injured in our expansive wildernesses. Sadly, the strength and friendliness of those inter-agency connections vary widely across the state
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Katie Mummah @nuclearkatie.com · 26/09/2026
Some fire departments & sheriffs apparently view SAR as a way to get themselves a higher budget for overtime and training. However, they're not actually equipped with the wilderness skills needed for many SAR missions, and then SAR teams are called in much later, sometimes too late. Sometimes never.
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Katie Mummah @nuclearkatie.com · 26/09/2026
This has been an ongoing problem for so many years that the legislature passed a law in 2025 requiring jurisdictions to notify the state police (which SAR volunteers operate under) when a report could involve “lost, stranded, entrapped or injured persons". But is it working?
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Katie Mummah @nuclearkatie.com · 26/09/2026
Bob Rodgers, NM state SAR resource officer/only person in the state who gets paid to manage SAR, says "Fire departments, county sheriffs, feel they can do it without us, and if they get into a problem, they’re waiting two or three hours, if not days, before they finally realize they needed SAR.”
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Katie Mummah @nuclearkatie.com · 26/09/2026
"Search and rescue teams going on fewer missions in New Mexico despite rising call volumes" Why? Sheriffs & fire depts are trying to tackle missions alone. Even when SAR volunteers, who are unpaid, have different and unique skills, could help. The public loses out. www.ems1.com/search-and-r...
ems1.com
N.M. search and rescue teams face fewer missions despite increase in calls
Volunteer search and rescue leaders say local agencies are waiting too long to request specialized teams
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Katie Mummah @nuclearkatie.com · 26/09/2026
I really do not see a distinction between a job interview and a meeting when it comes to bringing a beverage with you. I really do not get how it is not a meaningless detail. What is unprofessional or untoward about hydration???
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Katie Mummah @nuclearkatie.com · 25/09/2026
Is this gender????? Why is everything gender
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Katie Mummah @nuclearkatie.com · 25/09/2026
As long as your beverage is not prohibited (e.g. alcohol, CBD drinks, disallowed from the physical location for health and safety reasons) I see no reason why this is something people have strong opinions about??
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Katie Mummah @nuclearkatie.com · 25/09/2026
I do not really drink iced coffee. I bring hot coffee in a travel mug from home every day of the year. I have never once thought about someone else's beverage in a meeting let alone during an interview, except when I forget my own water bottle and then it's jealousy
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Katie Mummah @nuclearkatie.com · 25/09/2026
If I can't bring my coffee or water bottle to a conference room I do not want to be there, or work with people who have such stupid and unwritten rules. Exceptions of course for labs or nuclear facilities but none of these no-beverage hardliners seem to be talking about those situations
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Katie Mummah @nuclearkatie.com · 24/09/2026
Why was I low energy all day? Oh yeah I only drank half my coffee, it's a real mystery
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Reposted by Katie Mummah
Ryan Marino, MD @ryanmarino.bsky.social · 23/09/2026
He’s right. It really is a shame that we haven’t bothered to utilize electromagnetism in western medicine
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Katie Mummah @nuclearkatie.com · 23/09/2026
Sometimes Teams just decides to take four+ minutes to load my meeting. Don't rush buddy, this 30 minute meeting has plenty of time
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Reposted by Katie Mummah
Paul Ford @ftrain.com · 16/09/2026
hey I heard you like sankey diagrams that show huge populations making terrible decisions
A very complicated Sankey diagram showing the usage of electricity in the United States. Or the left are sources of energy and on the right are consumers, so, for example, nuclear is on the left and residential is on the right. Petroleum dominates.
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Reposted by Katie Mummah
Funranium (AKA Phil Broughton) @funranium.bsky.social · 18/09/2026
In light of that long thread, it's nice to see old creations of mine come up again.
OSHA 1993 Caution style sign.

FERAL ENGINEER AREA
Unexamined assumptions present
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Reposted by Katie Mummah
Katie O'Reilly @drkatfish.bsky.social · 16/09/2026
A screenshot of a Tumblr post about scientists wanting to tell people about their science
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Katie Mummah @nuclearkatie.com · 15/09/2026
This is the proper way to check that you're not bringing devices into secure areas
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Katie Mummah @nuclearkatie.com · 15/09/2026
App: can we send you notifications? Me: ✨ never✨
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Katie Mummah @nuclearkatie.com · 11/09/2026
I needed to grab a coworkers paper quickly so I searched for it by keywords and Gemini not only hallucinated a first name from "A.", it decided on a common mens name and referred to the researcher as he. Her name is Alex! which is even in one of the documents cited!
Google search for "Levinsky shielding NASA"

"AI Overview 

Andrew Levinsky is a researcher at Los Alamos National Laboratory (LANL) who collaborated with NASA on radiation shielding design for Fission Surface Power (FSP) systems. [1] (https://ntrs.nasa.gov/api/citations/20260002520/downloads/Levinsky_CP_MultifacetFSP_RadShield_20260002520.pdf), [2] (https://epubs.ans.org/?p=proc:3466&pg=2)

Core Project Focus

Levinsky and his co-researchers authored a paper titled "Multifaceted Considerations for Fission Surface Power Radiation Shielding Design". This work addresses how to build shields for nuclear reactors deployed on the lunar surface to protect human habitats and sensitive hardware. [1] (https://ntrs.nasa.gov/api/citations/20260002520/downloads/Levinsky_CP_MultifacetFSP_RadShield_20260002520.pdf)"
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public health guy @publichealthguy1.bsky.social · 10/09/2026
📈📈📈
Gas Station Price Sign Using Scientific Notation

the ONION
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Katie Mummah @nuclearkatie.com · 10/09/2026
Yes all commercial production is by centrifuge
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Katie Mummah @nuclearkatie.com · 10/09/2026
I had a Twitter account while the United States was still enriching uranium by gaseous diffusion
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Katie Mummah @nuclearkatie.com · 10/09/2026
I mean we did use it successfully until 2013, a fact that's easy to forget!
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Reposted by Katie Mummah
Funranium (AKA Phil Broughton) @funranium.bsky.social · 09/09/2026
It can discern the 235 from 238 just by looking at it, though it is a bit prone to hallucinating 3̷̧̠͇͔̻̖̈̈̂́2̸͖̯̪̿̈́̎͐̆͛̾̍̕8̸̨̢̪̻̻̣̼̗͙̣̯̩̎̅̃̽͂̑͊̃̚ from time to time.
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Katie Mummah @nuclearkatie.com · 09/09/2026
Well it better not be HEU lol
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Funranium (AKA Phil Broughton) @funranium.bsky.social · 09/09/2026
Isotopic gleaning. They have very scientific tweezers and pluck the 235 when it’s perfectly ripe and ready for market.
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Katie Mummah @nuclearkatie.com · 09/09/2026
I think you shouldn't be able to qualify for a $900 million contract from DOE without publicly announcing the type of technology you're using. Until they do I'm going to spread the rumor that General Matter is going all the way back to outdated gaseous diffusion
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Katie Mummah @nuclearkatie.com · 09/09/2026
You're right but they haven't been loud about it. I would be curious to see a timeline of when they've spent the reported $400 million between the two venture owners (Cameco and Silex). I expect they're ramping up now but have they just been plodding along at a constant level all this time?
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Katie Mummah @nuclearkatie.com · 09/09/2026
Yes that's what's actually going to be built soon. Between Centrus, Orano, and Urenco there's significant SWU across a wide range of enrichments coming quickly!
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Katie Mummah @nuclearkatie.com · 09/09/2026
NO AND I'M STILL MAD ABOUT IT!
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Katie Mummah @nuclearkatie.com · 09/09/2026
One thing that was clear from Global, the nuclear fuel cycle conference, is that venture capital has made its way beyond reactors alone and into the fuel cycle. Laser enrichment is back, baby!
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Katie Mummah @nuclearkatie.com · 09/09/2026
I don't know what an adaptogen is and at this point I refuse to learn
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In Preparation @inprep.bsky.social · 08/09/2026
inpreparation.substack.com
40% Of PhD Now Spent Selecting ‘All Squares Containing Bicycles’
BALTIMORE, MD—A study published Tuesday in PLOS ONE found that approximately 40% of doctoral training is now spent confirming the researcher is not a robot, primarily through the selection of squares…
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Reposted by Katie Mummah
𝔻𝕖𝕖𝕡 𝕋𝕙𝕠𝕥 @thatsgoodweb.bsky.social · 07/09/2026
locking in for the final day of the weekend
a guy in a crazy reclining contraption using a 90’s pc
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Katie Mummah @nuclearkatie.com · 07/09/2026
Always look on the bright side!
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Reposted by Katie Mummah
🇵🇸Martin “Doomsday” Pfeiffer🖖🏳️‍🌈 @nuclearanthro.bsky.social · 07/09/2026
I’m just glad everyone seems to recognize NM is actually part of the USA.
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Katie Mummah @nuclearkatie.com · 07/09/2026
Well I would probably die as collateral damage if that was the case so at that point it wouldn't matter to me
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Katie Mummah @nuclearkatie.com · 07/09/2026
Do not bring New Mexico into this ffs
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Katie Mummah @nuclearkatie.com · 04/09/2026
Yeah currently thinking about the students I knew in the program. And maybe feeling a little bit better about how hard I found it trying to get more involved in the department (as a student getting a minor/interested collaborator)
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Reposted by Katie Mummah
Shobita Parthasarathy @shobitap.org · 04/09/2026
Dietram Scheufele is a major science communication scholar. What strikes me (as it has in past cases, including those at Michigan) is how academia--faculty and administrators--simply *do not want to know* about bad actors, especially when they are famous. Explains why ASU has turned a blind eye too.
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Katie Mummah @nuclearkatie.com · 04/09/2026
That department's vibes were always off in a way I could never quite understand. I got a graduate level minor in LSC and quite frankly I tried to get more involved in the department mostly unsuccessfully, except for connecting with other students (who were all great)
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Reposted by Katie Mummah
The Onion @theonion.com · 04/09/2026
“Whether you’ve been sideswiped by a tractor-trailer on a two-lane road or dragged through an intersection by a furniture delivery truck, you can now easily plot a course that fully accommodates your mangled body.” — Jasmine Harper, lead product developer
theonion.com
Google Maps Introduces Crawling Directions For Cyclists Hit By Truck
MOUNTAIN VIEW, CA—Touting the new feature as yet another innovation to help every traveler get where they’re going, Google Maps on Thursday began offering crawling directions for cyclists who have bee...
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Katie Mummah @nuclearkatie.com · 02/09/2026
I've enjoyed using Bitwarden FWIW
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Katie Mummah @nuclearkatie.com · 02/09/2026
Descending a mountain via a route you don't understand many hours after you expected to be off that mountain without adequate overnight gear next to your buddies using a headlamp is exactly a route I would strongly recommend turning your headlamp on for
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Katie Mummah @nuclearkatie.com · 02/09/2026
I'm not saying it's ok to be unprepared, just that I don't find this a compelling or novel case of being prepared. Yes they should have done better prep and made better decisions, but in the exact same ways that most mountain rescues do!
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Katie Mummah @nuclearkatie.com · 02/09/2026
They kept ascending too late (they got bad advice from at least one group), not contemplating that they didn't have overnight gear. They also continued up despite not feeling well. At least one person was choosing not to use a headlamp, risking an injury which then happened. On-mountain decisions!
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Katie Mummah @nuclearkatie.com · 02/09/2026
Consuming mostly simple carbs for a day of hiking is completely reasonable nutrition advice! Yes they brought too little and assumed they would be faster than they were and outsourced some of their planning but so has at least one person on every group trip I've ever been on, no AI required!
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Katie Mummah @nuclearkatie.com · 02/09/2026
If you actually read the article it looks like AI played a rather small role in this event. Mostly they made bad decisions on the mountain! AllTrails is a popular GPS app, lots of people rely on it + GPS watch (paper maps should be a backup, but this is not abnormal) krcrtv.com/news/local/t...
krcrtv.com
Three Mount Shasta climbers rescued after relying on AI to plan climb
Three novice climbers were rescued from Mount Shasta on Sunday after becoming lost, running low on supplies and spending an unplanned night in Mud Creek Canyon,
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