Arbeitseinsatz – Forced labour at the Sigla Sicherheitsglas G.m.b.H. company in Gross Kunzendorf N.L. – Poland Hendrik (Henk) Hoogendoorn was born on the 1st of February 1921, my grandfather was just 19 years of … Posted February 7, 2014 (updated February 18, 2024) by Patrick