There is a lot of gold in urban dumps

gOld mining It can be a dirty business. Even with relatively rich deposits, which are usually found in remote areas, you need giant excavators, huge crushing machines, lots of water and highly toxic chemicals, such as acids and cyanide, to extract just ten grams of gold from one ton of ore (there are 31 Grams in troy ounces). At current rates, it’s worth more than $800.