Gold One will suspend operations at its Ezulwini mine for at least a month after firing around 1400 workers, it said.
"This is to ensure the safety and security of employees and assets amidst rising intimidation and tension within the national mining sector," the company said.
The suspension would continue until such time as operations at the mine, west of Johannesburg, could be safely resumed. Only essential services would operate.
The workers were fired after a week-long "wildcat" strike -- a strike started without following recognised labour dispute procedures.
Gold One spokesman Grant Stuart said on Monday the employees, of a total workforce of about 1900, had undergone an appeal process and had lost this.
Gold One president and CEO Neal Froneman said Ezulwini was a marginal operation and the recent unprotected industrial action placed it under "considerable economic pressure".
On Monday the Chamber of Mines told mining companies they would have to find their own individual solutions to a wave of unprotected strikes that had stopped production, after their attempts at mediated proposals failed.
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