Was just visiting an old gold mine today. I believe the person said 1 ton of ore produced a little over an ounce of gold. So the 70% is off by a huge amount. If I did my math correct that's about 0.003% gold from raw ore. Now this guy might have been stating numbers from when the mine was started, somewhere around the late 1800's early 1900's. But regardless, there's no way you're going to get 70% gold out of gold ore.
Was just visiting an old gold mine today. I believe the person said 1 ton of ore produced a little over an ounce of gold. So the 70% is off by a huge amount. If I did my math correct that's about 0.003% gold from raw ore. Now this guy might have been stating numbers from when the mine was started, somewhere around the late 1800's early 1900's. But regardless, there's no way you're going to get 70% gold out of gold ore.