From 1942-45, my mother worked, with false identity papers, in an ammunition factory located in the district of Minden, Westfalen, Germany.  I would like to identify the name of the factory.  She remembered the owner's surname as something like Siddorf.  
--
Marsha Abraham Shapiro

Researching:                                                                                                                                                                                                                                                                    
ABRAHAM, HOFFMAN, KOENIGSBERG, ACKERMAN - Nagyrakocz/Vel'ky Rakovec, Polyana, Hungary/Czechoslovakia
BOHRER, WACHS/WAKS - Dabrowica (Podkarpackie),Grodzisko, Lezajsk, Jastrzebiec, Kurylowka,Tarnawiec,Poland
WAGNER - Dabrowica (Podkarpackie), Poland
ZIMMERMAN - Tarnogrod, Poland