The Pacific War Online Encyclopedia: Sulfur
Acid contamination was rarely a concern in the 1940s, but environmental damage from the Ashio mine in Japan led to riots in 1907. Sulfur was not a limiting resource for the Allies due to the abundant supplies of Frasch sulfur from the southern United States. Japan was only % selfsufficient in sulfuric acid in 1936, but production (primarily from pyrites) was heavily ramped up by 1941, and the shortage of other