Answer:
The large and the good quality underground mines contains 8 grams to 10 grams of gold per ton of the Earth
whereas, the marginal underground mines contains nearly 4 grams to 6 grams of gold per ton of Earth
Explanation:
The mines are divided into two types
Underground mines
Open pit mines
Now,
According to the World Gold Council
The large and the good quality underground mines contains 8 grams to 10 grams of gold per ton of the Earth
whereas, the marginal underground mines contains nearly 4 grams to 6 grams of gold per ton of Earth
Also, Open-pit mines usually range from 1 gram to 4 gram gold per ton of Earth
