"This is a cruel and shocking act, which has no place in our society or in labour disputes, and follows previous attacks on police under similar circumstances," acting government spokeswoman Phumla Williams said.

"Government will ensure that... those responsible for the attack on the officer this morning are brought to justice."

The officer's left arm was seriously injured when he tried to protect himself against the blows, aimed at his head.

Brigadier Thulani Ngubane said the attack happened while police were dispersing about 3000 strikers who had gathered at the mine around 9am.

"The constable was rescued by other police officers, who rushed him to Peglerae Hospital."

Police arrested 26 people.

"One has been identified as the possible attacker of the police officer and a charge of attempted murder has been registered against the suspect."

Striking workers demanded a monthly salary of R12,500.

Said Williams: "Acts of intimidation and violence will not be tolerated as part of labour disputes because these are simply criminal actions, which will be met with the full might of the law."