While the Imperial Japanese Army used portions of the poison gas weapons it manufactured mainly during the 1937-1945 Sino-Japanese War, the rest were abandoned or disposed of in China and Japan.A number of unexploded shells filled with poison gas or such gas in other forms were found in more than 40 locations in China and over 30 areas in Japan -- from Hokkaido to Kyushu, according to the Japanese government.The issue remains unresolved even after the two neighbors marked the 50th anniversary of the normalization of diplomatic ties on Sept. 29.During the war, Japanese troops carried out poi…READ FULL ARTICLE