The south courtyard of the State Department Building features a sculpture by Marshall Fredericks entitled " Man and the Expanding Universe ", which includes a circular fountain and an architectural bronze statue.
2.
Commercial bronze ( 90 % copper and 10 % zinc ) and architectural bronze ( 57 % copper, 3 % lead, 40 % zinc ) are more properly regarded as brass alloys because they contain zinc as the main alloying ingredient.
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