I just finished reading
View attachment 739730
According to this book the US starting filling 500 lb bombs with Composition B in April 1943. Approximately 25 % of bombs dropped by the USSAAF in Europe were comp B. Also it is lees clear about RAF usage but the first priority for Torpex was Tallboys with some use in 4000 and 500 lb bombs.
Thanks for mentioning that book.
However, I have skepticism over that 25% figure. On page 50 it states the 9th Air Force in March 1945 dropped 40,751 x 500-lb bombs and 2,830 x 1,000-lb bombs filled with Composition 'B'. But these numbers are at odds with a document that Geoffrey Sinclair posted in another thread which listed the number of bombs dropped by the aircraft types of the 9th Air Force from October 1943 through May 1945. According to that document, only 13,066 bombs of 500 lbs and 2,162 bombs of 1,000 lbs filled with Composition 'B' in total. These numbers are obviously far lower than what is listed in Baxter's book.
It's possible, of course, the document doesn't for whatever reason list all the Composition 'B'-filled GP bombs that were used. (The filling was used in several fragmentation bomb types.)
In terms of explosives production by the United States,
OMPUS lists the following. Figures are in thousands of tons and is for July 1940 through August 1945.
6,688,835 — TNT (78.87%)
0,734,868 — RDX (8.66%)
0,326,374 — Ammonium Picrate (Explosive 'D') (3.85%)
0,058,324 — PETN (0.69%)
0,491,682 — Ammonium Nitrate (5.80%)
0,179,371 — Tetryl (2.11%)
0,001,864 — Lead Azide (0.02%)
8,481,318 — Total