E=mc2 not quantitatively confirmed in bombs exploded on Hiroshima and Nagasaki in 1945 ? There is no data how much mass (m) is destroyed and how much energy is emitted (E).

E=mc2 not quantitatively confirmed in bombs exploded on Hiroshima
and Nagasaki in 1945 ? There is no data how much mass (m) is destroyed
and how much energy is emitted (E).

(i) Robert Serber (member of first American team entered
Hiroshima and Nagasaki in September 1945 to assess loses), has
indicated [1] that the efficiency of "Little Boy" weapon [U235 ,
49kg ] that was used against Hiroshima was about 2% only.
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[1] Serber , R The Los Alamos Primer (U.S. Govt. first published as
LA1, April 1946),
declassified 1965 , annotated book , 1992. also R
.. Serber (editor) , The Los Alamos Primer pp. 38 (Univ. of
California Press, 1992)

(ii) It is assumed that all the atoms don't undergo fission, thus
material is wasted. But no such waste material is specifically measured
quantitatively.
Thus the waste material (nuclear reactor or weapon) must be measured
and corresponding energy is calculated. Only then efficiency will be
explained, why it is 2%
(iii) But no measurements and calculations have been done till date.
Until such calculations and measurements are done specifically, it
cannot be said that E=mc2 is quantitatively confirmed in such cases.
The more information in this regard can be found and issue can be
discussed at
http://www.ajayonline.us