What word links these: detector, polish, scrap
Polish mine detector Polish mine detector The Mine detector Mark I was a metal detector for landmines developed during World War II. Initial work on the design had started in Poland but after the invasion of Poland by the Germans in 1939, and then the Fall of France in 1940, it was not until the winter of 1941–1942 that work was completed by Polish lieutenant Józef Kosacki. In the pre-war period the Department of Artillery of Poland's Ministry of National Defence ordered the construction of a device that could be helpful in locating duds on artillery training grounds. The instrument was designed by
Polish mine detector the AVA "Wytwórnia Radiotechniczna", but its implementation was prevented by the German invasion of Poland. 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 invention was not patented; he gave it as a gift to the British