gunDriller
11th December 2010, 07:59 AM
http://goldmoney.com/gold-testing
they show what air pockets & defects look like in an aluminum bar.
they also ultrasonic-scan a 400 ounce gold bar, but it looks OK.
they show what air pockets & defects look like in an aluminum bar.
they also ultrasonic-scan a 400 ounce gold bar, but it looks OK.