For the history of Chinese railways, see Tyau, op. cit. pp. 183 ff.
China in 1918. Published by the Peking Leader, pp. 45-6.
Op. cit. chap. xi.
China in 1918, p. 26. There is perhaps some mistake in the figures given for iron ore, as the Tayeh mines alone are estimated by some to contain 700,000,000 tons of iron ore. Coleman, op cit. p. 51.
Page 63. The 1922 Year Book gives 19,500,000 tons of coal production.