What is clean material? What contaminates metal?

Clean material has no other alloys on the metal other than the grade being sold. For example, aluminum cannot have steel screws in the material and be purchased as clean. Contaminants of non-ferrous metals are steel, glass, rubber, and plastic.

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I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.