The Blechhammer (English: sheet metal hammer) area was the location of Nazi Germany chemical plants, prisoner of war (POW) camps, and forced labor camps (German: Arbeitslager Blechhammer; also Nummernbücher). Labor camp prisoners began arriving as early as June 17, 1942, and in July 1944, 400–500 men were transferred from the Terezin family camp to Blechhammer. The mobile “pocket furnace” (German: Taschenofen) crematorium was at Sławięcice.) and Bau und Arbeits Battalion (BAB, English: Construction Battalion) 21 was a mile from the Blechhammer oil plants and was not far from Kattowitz and Breslau. Blechhammer synthetic oil production began April 1, 1944 with 4000 prisoners,, with the slave labor camp holding these prisoners during April 1944, becoming a satellite camp of the dreaded Auschwitz extermination camp, as Arbeitslager Blechhammer.
^ abHutson, Fred (April 2006). "Fred Hutson". Tommy's Log: The Logbook of Tachus (Tommy) Constantine McNamee. MurrayArmstrong.com. Retrieved 2009-04-22.
^Bohnstedt, Douglas (2004). "Blechhammer - 15af.org"(PDF). 15thaf.org. 15thaf.org. Retrieved January 25, 2018. In April 1944 Blechhammer became a satellite camp of Auschwitz, named Arbeitslager Blechhammer, a.k.a. Labor Camp Blechhammer.
^Withington, Ted (1993). Flight to Black Hammer: the letters of a World War II pilot. Biddle Publishing Company. ISBN1-879418-06-1.
^ abJones, Chris (19 September 2004). "Message 1 - blechammer, el tahag and chieti". WW2 People's War - Dad's Journey. BBC.co.uk. Retrieved 2009-04-21. the main one referred to as 'E3' in the Stalag labour system was to be found there, though the others in and around the area include: BAB 20, 21, 40 and 48; and E711, E711A, E769, E793 E794 (these last two were renamed BAB20 and 21)