by Dr Michaela Appel Otto Honigmann (1879-1959) was from a renowned Aachen family of mine-owners. He was born the third son of Moritz and Marie Honigmann on September 7, 1879 in Grevenberg, now known as Würselen. Moritz Honigmann (1844-1918) was a chemist and industrialist who improved sodium carbonate production and developed the ammonia soda … Continue reading Otto Honigmann: An Introduction