Olympic Silver medal weight

Answer 1

They are not solid they are plated. The total cost of all the medals is $1.300,000 The medals for next month's Olympics have been supplied by BHP Billiton, the world's biggest mining group, which shipped the raw materials to China from Australia and Chile. Producing the copper concentrate for the gold medals and the lead concentrate for the gold and silver medals involved more than 13,000 BHP employees, according to the company. BHP and Rio Tinto, its Anglo-Australian rival, have been fighting a public relations battle in China for several months as they court key customers during negotiations over potential price increases.