As of March 1941, 300 tonnes of this material would, on average, traverse the Trans-Siberian Railway every day on its way to Germany. According to one analysis of the natural rubber supply chain, as of 22 March 1941, 5,800 tonnes of this essential material were transiting on the Soviet railway network between the borders of Manchukuo and Germany, 2,000 tonnes were transiting Manchukuo, 4,000 tonnes were sitting in Dairen, 3,800 tonnes were in Japan, and 5,700 tonnes, on the way from South-East Asia to Japan.