Investors have warned that the correction in gold prices has meant that miners are producing gold at cost or are losing money.

Last year, CNBC's Bob Pisani traveled to South Africa to show us how gold goes from particles to gold bars.

He followed AngloGold Ashanti's gold mining process from start to finish. Workers there pull up 5000 metric tons of earth per day, which yields as much as 1,700 ounces in gold.

Pisani also visited the Rand Refinery, which has refined nearly a third of the gold mined since 1920.