"Why do we need mining anyway?" At first I didn't hear the question because I was lost in my own thoughts as we strolled through the narrow and winding streets of Siena, one of the most beautiful medieval cities in Italy. It was early afternoon and most businesses were shuttered against the midday heat. Sounds of animated conversation punctuated by the clink of silverware against china echoed from tiny restaurants and I suddenly wanted to sit down in one of these places. I wanted to sit so that I could give the question thoughtful consideration and answer it slowly and with detail.
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