Tuhia he haere tonu mō tēnei wāhanga - I tautoko pūtea a Kronenberg i te aranga o Hānuere
o te tau 1863 ki ngā Rūhia. Whai muri i te hinganga o tenei tutu, ka noho ia hei māngai mo te roopu "ma" e pai ana ki te whakatau ki nga Ruhia. I te tau 1870, i whakatuhia e Kronenberg te Bank Handlowy, te peeke arumoni o Warsaw, a i te tau 1875 i whakatuhia e ia te Warsaw School of Economics. I whakatuhia hoki e ia te Credit Corporation o Warsaw, Industrial Cashier, Warsaw Fire Insurance Company, Coal Mine Association me Metallurgical Works.