Secretive Swiss vaults may hold missing link in platinum price equation

Underground vaults next to a Swiss farming village may reveal one reason for the platinum market's indifference to its biggest ever supply shock.

Most analysts and market players expected steep price increases for the precious metal as a record five month mining strike in South Africa, which ended on Tuesday, wiped out some 40 percent of global supply.

Yet values have been stuck in a $140 an ounce range gaining just five percent so far this year.

Secretive Swiss vaults may hold missing link in platinum price equation