Harmony Gold's Kusasalethu mine on the West Rand remained closed on Thursday as workers barricaded the entrance, the company said.
“This morning there was some intimidation,” spokeswoman Marian van der Walt said.
“A small group of workers barricaded the entrance to the mine.”
She said despite this, the strike, involving most of the mine's 5400 workers, remained non-violent.
Van der Walt said management would not apply for an interdict against the workers.
“They still haven't returned to work.”
The strike began on Tuesday night, when a group of about 300 men prevented night shift workers from going underground.
Van Der Walt said talks between workers and management were ongoing, but any wage negotiations would take place within the Chamber of Mines' collective framework. - Sapa