10 to 15 ounces of gold
Actually, according to statistics, an Olympic "Gold Medal" is actually 90% silver... just another fact.
Use zinc powder add to Gold chlorides.It will reduced into gold metal.Heat it to get gold.Purify gold by chemical process to pure gold metal.
Plenty of gold was still left and still is there. Today if you wanted to go gold panning or mining you would find gold.