How Gold Mining Works | Gold News BullionVault
May 19, 2009· Each ton of ore that is hauled out of a good pit mine may contain about a tenth of an ounce of gold. With gold at, say, 900 an ounce, that makes a ton of ore worth 90, tops. Considering that the huge trucks used at some mines can hold up to 300 tons or more on each run, a truckload of ore coming out of the mine can be worth around 27,750.