gptkbp:notableProduct
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gptkb:steam_locomotive
gptkb:Paris_Gun
industrial equipment
shooting
locomotives
artillery
naval guns
tanks
machinery parts
steel bridges
cranes
industrial machinery
presses
rolling mills
industrial plant construction
railway wheels
U-boat components
submarine hulls
steel cannon
steel castings
Big Bertha (howitzer)
chemical plant equipment
armored plate
forged steel products
shipbuilding components
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