Not just A10s but bunker busters and all kinds of other munitions where you need the hardest metal shell material that is practically available in quantity. The

Not just A10s but bunker busters and all kinds of other munitions where you need the hardest metal shell material that is practically available in quantity. They get shot deep in the earth and leach metals into the soil and thus the plant and animal life and it's already a problem with some crops in the middle east.