How many Americans died from industrial accidents (or similar causes)
during World War II?  I have a figure of 300,000 but what is the
source?  And what were the chief causes?  300,000 seems very high. 
Thanks!

300,000 is number of total "battle deaths"

Other Deaths in Service - is estimated to 115,000
http://www.va.gov/pressrel/amwars01.htm

http://www.cwc.lsu.edu/cwc/other/stats/warcost.htm                   <-115,000
http://www.historyguy.com/american_war_casualties.html               <-115,000
http://www.k12albemarle.org/MurrayHS/SSHome_Page/USnet/wwiibnts.htm  <-100,000


but this page state something else:
http://www.findarticles.com/p/articles/mi_m1373/is_n5_v45/ai_16889616  <-300,000

i`d rather belief in gov issues - so make it 115,000 industrial accidents