Polish mine detector

Following the fall of Poland and the transfer of Polish HQ to France, work restarted on the device, this time intended as a mine detector.

Little is known of this stage of construction as the work was stopped by the Battle of France and the need to evacuate the Polish personnel to Great Britain.

There in late 1941 Lieutenant Józef Kosacki devised a final version, based partially on the earlier designs.

His design was accepted and 500 mine detectors were immediately sent to El Alamein where they doubled the speed of the British Eighth Army.

To this end "Lulu" (on a Sherman tank) and subsequently "Bantu" (on a Staghound armoured car) were developed.