I'm reading the Swedish book on Rumkowski. He transformed the ghetto into a large industrial park that employed 70000 workers and generated 2.2 million Reichsmark profit for the German administration. It was an enormous sum. More than 90% of production was on orders from the Wehrmacht and the police: uniforms, coats sheepskin coats, warm jackets, caps, shoes, straw boots, knapsacks, rucksacks etc. Approximately 10% of the ghetto’s production was for orders by Berlin department stores. Himmler decided to liquidate the ghetto in early 1944 but it was of such economic importance that the Minister for Armaments Speer delayed till he could. Lodz ghetto almost outlasted the war. Almost. Pic.: A typical ghetto workshop.