Actually FReepers post from all sorts of ancient newspapers. I still enjoy one Freeper who constantly posts from the 1857 Harpers Weekly.
Here it is. All of it. Amarillo Daily News, Aug 20, 1940. page 3. (Behind a paywall)
New Powerful Explosive Revealed! BURBANK. Calif., Aug. 19 (IF)—! Dr. Arthur W. Shaudopvsky. former Brussels scientist, said in an interview here a uranium explosive had been developed and tested in the United States which is “at least 15 times more powerful and perhaps almost 100 times more potent than TNT.”
https://www.newspapers.com/newspage/15466148/
Dr. Shaudopvsky. who came here from Wilmington. Del., said he and two other research engineers tested the explosive in a remote spot and found that whereas 1,500 grams of high-power dynamite did 868 foot- pounds of work, the blast from only 100 grams of the uranium explosive accomplished 4,270 foot-pounds of work —with only the downward force measured.
This is prima facie nonsense.
A stick of dynamite [with a weight of about 190 grams] contains roughly 1 MJ (megajoule) of energy. - Wikipedia
1 foot pound-force = 1.36 joules - Wikipedia
The following are back-of-envelope calculations:
1,500 grams of dynamite is roughly equivalent to 8 sticks of dynamite and thus contains roughly 8 MJ of energy = 5.8 million foot pound-force of energy. This is about 6,700 times the quantity of energy cited in the article for 1,500 grams of dynamite and still about 1,350 times the amount of energy cited in the article for 100 grams of Uranium.
Regards,