As the economic crisis continues, there is a rush on gold. The precious metal is considered as one of the only safe haven.
The world’s four major gold refineries are in Switzerland and most of the world’s gold is processed there.
In 2012 a record 2600 metric tonnes or almost $100bn-worth (75.9bn euros) was imported and refined in Switzerland.
Imogen Foulkes from BBC gained rare access to one of the refineries for a look at this highly secretive industry.