The biggest union in South Africa's
platinum sector calls a strike over pay, potentially, halting production
at the world's top three producers.
Amcu says its 70,000 members will go on an indefinite strike, starting on Thursday.
It is demanding a "living wage" of 12,500 rand ($1,150; £700) - more than double their current pay.
Mining companies have said they cannot afford the increases due to increasing production costs and stagnated demand