Rubuta ci gaba ga wannan sakin layi - A 1653, an sayar da Ørholm ga Herman Isenberg. An tilasta masa ya samar wa jihar duk wadatar da ake buƙata na gunpowder amma kuma zai iya siyarwa ga abokan ciniki masu zaman kansu. An adana gunpowder a cikin kantin sayar da gunpowder a Copenahgen ta Nørreport ƙofar gari kuma an yi amfani da shi a cikin kare birnin a lokacin Assault on Copenhagen