Second Ruhr

The Second Ruhr was a World War II area that, according to a contemporary report in Flight, included the "Southern regions of Germany, the plateau of Bohemia, and Polish Silesia" where Nazi Germany's military production was dispersed away from Allied bomber bases in England. After the Allied bombing of German aircraft facilities had begun during Operation Pointblank, Nazi Germany dispersed the 27 larger aircraft works^[specify] across 729 medium and very small plants (some in tunnels, caves, and mines), and oil production was also dispersed (e.g., Blechhammer). However, by October 1943, long-range bombers could reach the area (e.g., Marienburg).

References

1 2 Gruberg, V.L. (23 September 1943). "The Coming Phase". Flight. p. 338. Retrieved 2010-10-20. This vast industrial area, which has been called by the Germans the "second Ruhr" (and which includes the Southern regions of Germany, the plateau of Bohemia, and Polish Silesia, hitherto more or less impervious to bomber attack), has been stripped of its geographic defenses^{[verification needed]}
↑ Galland, Adolf (1968) [1954]. The First and the Last: The Rise and Fall of the German Fighter Forces, 1938-1945. Ninth Printing - paperbound. New York: Ballantine Books. p. 237.

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[FlightGlobal-1] 1 2 Gruberg, V.L. (23 September 1943). "The Coming Phase". Flight. p. 338. Retrieved 2010-10-20. This vast industrial area, which has been called by the Germans the "second Ruhr" (and which includes the Southern regions of Germany, the plateau of Bohemia, and Polish Silesia, hitherto more or less impervious to bomber attack), has been stripped of its geographic defenses^{[verification needed]}

[2] Galland, Adolf (1968) [1954]. The First and the Last: The Rise and Fall of the German Fighter Forces, 1938-1945. Ninth Printing - paperbound. New York: Ballantine Books. p. 237.