Yo's-
On the website of the Society for Mining, Metallurgy, and Exploration,
http://www.smenet.org , is a page they use to illustrate the American
demand for minerals, depicted as a drawing of a happy baby surrounded by
the names of materials and the quantities involved.
That page is colloquially known as the "Mineral Baby" page:
http://www.smenet.org/docs/public/Baby%202011.pdf
Take a good look and have a good think.
-G.