According to union leader Joseph Mathunjwa this will continue until employers meet their demands.
"How long will the strike take? The struggle is the struggle at the end of the day... We will continue," Mathunjwa told a Cape Town Press Club luncheon.
Wage talks between the Association of Mineworkers and Construction Union (AMCU) and platinum producers resumed on Tuesday in a government-brokered intervention to try and break a deadlock over demands by the union for their wages to be more than doubled.
AMCU members walked out at Anglo American Platinum, Impala Platinum and Lonmin in January.
With close to half of South Africa's platinum industry stressed due to falling prices, higher input costs and labour strife, mining companies argue they cannot afford the wage demands.
The Chamber of Mines estimates the strikes are costing the sector about 197 million rand per day in direct revenue lost.