Saw this article this morning, I wonder if they would allow "bulk billing"
http://news.ninemsn.com.au/technology/2013/08/07/12/10/x-rays-could-help-detect-gold-csiro-says
http://news.ninemsn.com.au/technology/2013/08/07/12/10/x-rays-could-help-detect-gold-csiro-says