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wellerstein's profile
Alex Wellerstein
Alex Wellerstein
Alex Wellerstein
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@wellerstein

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Alex WellersteinVerified account

@wellerstein

Historian of science, secrecy, and nuclear weapons. Professor of STS at @FollowStevens. UC Berkeley alum with a Harvard PhD. NUKEMAP creator. Coder and web dev.

Hoboken, NJ / NYC
blog.nuclearsecrecy.com
Joined September 2011

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    1. Martin “Doomsday” Pfeiffer (⧖)  🏳️‍🌈‏ @NuclearAnthro 16 Jun 2018
      • Report Tweet

      Martin “Doomsday” Pfeiffer (⧖)  🏳️‍🌈 Retweeted Martin “Doomsday” Pfeiffer (⧖)  🏳️‍🌈

      one neat thing about being an early career scholar is experience of learning enough to (probably) correct widely cited materials. W54 mod 1 is SADM* W54 mod 2 is Davy Crockett W54 mod 0 is Falcon Now 90% sure Davy Crockett was 20tons not “10-20tons” as widely reported.https://twitter.com/nuclearanthro/status/997262178385149953 …

      Martin “Doomsday” Pfeiffer (⧖)  🏳️‍🌈 added,

      Martin “Doomsday” Pfeiffer (⧖)  🏳️‍🌈 @NuclearAnthro
      I am seriously starting to wonder if the Davy Crocket wan’t just 20 tons nominal yield. The Mk54 Mod 2 clearly stated 20 ton yield, was tested in Lil Feller shots at 18tons & 22tons. Was the supposed 10 ton yield the Mk54 Mod 1 which was canceled? pic.twitter.com/utPH9C8acN
      Show this thread
      3 replies 5 retweets 22 likes
      Show this thread
    2. Martin “Doomsday” Pfeiffer (⧖)  🏳️‍🌈‏ @NuclearAnthro 16 Jun 2018
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      How do I know W54 mod 1 is SADM (other than Polmar & Norris 2009)? Because I have access to a museum with one of the casings. reason the mod 1 lacked a trajectory sensing device, presumably, is because it was literally hand fucking delivered so no trajectory to sense.pic.twitter.com/WfkwZi2k2i

      2 replies 6 retweets 19 likes
      Show this thread
    3. Martin “Doomsday” Pfeiffer (⧖)  🏳️‍🌈‏ @NuclearAnthro 16 Jun 2018
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      So, unless somebody coughs up a primary source document saying Davy Crockett had a 10 ton yield version I am now pretty convinced that it wasn’t. W54 mod 2 Davy Crockett was nominal yield 20tons and I will now die on that hill.http://youtu.be/eiM-RzPHyGs 

      6 replies 4 retweets 15 likes
      Show this thread
    4. Stephen Schwartz‏Verified account @AtomicAnalyst Jan 4
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      Replying to @NuclearAnthro

      As you know, there are few declassified primary source documents that reveal the actual operational yield of our nuclear bombs & warheads. @wellerstein got ahold of the original Army field manual for the Davy Crockett, which _may_ shed some light on this.http://blog.nuclearsecrecy.com/2012/07/20/king-of-the-wild-frontier/ …

      2 replies 1 retweet 7 likes
    5. Stephen Schwartz‏Verified account @AtomicAnalyst Jan 4
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      Replying to @AtomicAnalyst @NuclearAnthro @wellerstein

      FWIW, this declassified official Army history of the management of the Davy Crockett program states definitively that in 1957, the Army Chief of Ordnance sought development of a delivery system capable of propelling a warhead with a yield as low as .01 kt. https://apps.dtic.mil/dtic/tr/fulltext/u2/a470429.pdf …pic.twitter.com/W3xDnuiWZs

      1 reply 0 retweets 4 likes
    6. Stephen Schwartz‏Verified account @AtomicAnalyst Jan 4
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      Replying to @AtomicAnalyst @NuclearAnthro @wellerstein

      Note that per this history, the AEC had already developed what became the W54, so the Army was designing the Davy Crockett _around_ it. At least a few of the documents in the footnotes, if FOIA-able, might answer your question once and for all.

      1 reply 0 retweets 2 likes
    7. Martin “Doomsday” Pfeiffer (⧖)  🏳️‍🌈‏ @NuclearAnthro Jan 4
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      Replying to @AtomicAnalyst @wellerstein

      I think I’m going to try and get a couple yields per se declassed.

      3 replies 0 retweets 3 likes
    8. Stephen Schwartz‏Verified account @AtomicAnalyst Jan 4
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      Replying to @NuclearAnthro @wellerstein

      Given the ongoing effort to develop new, low-yield warheads, that could be useful and timely. Unfortunately, I can see DOD and DOE using that fact to justify continuing to keep them secret.

      2 replies 0 retweets 4 likes
    9. Steve Weintz‏ @Moe_Delaun Jan 4
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      Replying to @AtomicAnalyst @NuclearAnthro @wellerstein

      Did Ted Taylor have a hand in the W54, & do you think its design influenced the design of Project Orion propellant charges? Don't recall any mention in George Dyson's book. I think Taylor joined the project in 1958.

      2 replies 0 retweets 1 like
      Alex Wellerstein‏Verified account @wellerstein Jan 4
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      Replying to @Moe_Delaun @AtomicAnalyst @NuclearAnthro

      Taylor is credited for the W54, yes, and he himself says the idea of small fission weapons was useful in Orion. But I don't think the W-54 was itself used in Orion in any way, just the experience of it. This is from G. Dyson:pic.twitter.com/fOASOu9KRm

      8:06 PM - 4 Jan 2019
      • 1 Retweet
      • 10 Likes
      • Wyatt Derp Jared Gonia Casillic 🏔🏔Schadenfreude ist die schönste Freude🔥 Julian Fekety Patrick McCray Albert Lunde Steve Weintz Martin “Doomsday” Pfeiffer (⧖) 🏳️‍🌈
      3 replies 1 retweet 10 likes
        1. New conversation
        2. Stephen Schwartz‏Verified account @AtomicAnalyst Jan 4
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          Replying to @wellerstein @Moe_Delaun @NuclearAnthro

          A "full implosion bomb that you could hold in one hand that was about six inches in diameter" is awfully close to the nuclear hand grenade concept being tossed around (sorry!) in Congress in the early 1950s, at a time when nuclearizing conventional weapons was in vogue. Yikes!

          2 replies 1 retweet 8 likes
        3. Casillic‏ @Casillic Jan 5
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          Replying to @AtomicAnalyst @wellerstein and

          Fun discussion. Some more information from C. Hansen on W54 and SADM. He claims 10 to 20 Tons yield on M-159/ SADM. I question his sources though. Note one being from Solider of Fortune Magazine...pic.twitter.com/KElpqtQYyt

          2 replies 2 retweets 4 likes
        4. Martin “Doomsday” Pfeiffer (⧖)  🏳️‍🌈‏ @NuclearAnthro Jan 5
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          Replying to @Casillic @AtomicAnalyst and

          I think Hansen wrong & has been source for claims of .01-.02kt yield claims going forward. only primary doc source giving a yield for Mk54 Mod 2 says 20 tons. Lil Feller tests both 20 tons +\- 10%. It’s 20 tons to me until someone coughs up a PRIMARY source doc otherwisepic.twitter.com/LzeVE4JOkD

          0 replies 0 retweets 1 like
        5. End of conversation
        1. New conversation
        2. Cheryl Rofer‏ @CherylRofer Jan 4
          • Report Tweet
          Replying to @wellerstein @Moe_Delaun and

          I tend to take physicists talking in public like this with a grain of salt.

          3 replies 1 retweet 8 likes
        3. Martin “Doomsday” Pfeiffer (⧖)  🏳️‍🌈‏ @NuclearAnthro Jan 4
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          Replying to @CherylRofer @wellerstein and

          Excellent advice for anything physicists say, really. :p

          1 reply 0 retweets 3 likes
        4. 1 more reply
        1. New conversation
        2. coginagear‏ @coginagear Jan 4
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          Replying to @wellerstein @Moe_Delaun and

          How much yield could a 6 inch device make?

          1 reply 0 retweets 0 likes
        3. Stephen Schwartz‏Verified account @AtomicAnalyst Jan 4
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          Replying to @coginagear @wellerstein and

          I don't know, but the term micro-nuke would be applicable.

          1 reply 0 retweets 1 like
        4. Steve Weintz‏ @Moe_Delaun Jan 4
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          Replying to @AtomicAnalyst @coginagear and

          Apart from the gee-whiz factor, discussing micro-nukes helps illuminate just how powerful nukes are. The W54 was 2X as powerful as the GBU-57 MOP, 70 lbs vs 11 tons

          1 reply 0 retweets 0 likes
        5. Stephen Schwartz‏Verified account @AtomicAnalyst Jan 4
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          Replying to @Moe_Delaun @coginagear and

          Or two to five times more powerful (depending on the yield) than the ammonium nitrate truck bomb that destroyed the Alfred P. Murrah federal building in Oklahoma City in April 1995. BTW, the W54 itself weighed just 51 pounds. The fully-assembled M388 projectile weighed 76 pounds.

          0 replies 1 retweet 1 like
        6. End of conversation

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