1911 Encyclopædia Britannica, Volume 8… (1911)
“ In addition to other iron and engineering works, Douai has a large cannon foundry and an arsenal; coal-mining and the manufacture of glass and bottles and chemicals are carried on on a large scale in the environs; among the other industries are flax-spinning, rope-making, brewing and the manufacture of farm implements, oil, sugar, soap and leather. Trade, which is largely water-borne, is in grain and agricultural products, coal and building material. ”
