It might pay to check any cans you see on the goldfields,or perhaps to give them a kick just see if they rattle
http://sanfrancisco.cbslocal.com/20...-10m-in-gold-coins-buried-on-norcal-property/
http://sanfrancisco.cbslocal.com/20...-10m-in-gold-coins-buried-on-norcal-property/