Note 25 — Chapter II
Reading edition
The same authority estimates that 85.6 of Upper Silesiaʼs zinc ore production and all the zinc smelting works fall to Poland. This is of some importance, since before the war Upper Silesia was responsible for 17 per cent of the total world production of zinc. Of the iron and steel production of the area 63 per cent falls to Poland. I am not in a position to check any of these figures. Some authorities ascribe a higher proportion of the coal to Poland.