The man was arrested in Modder East, at about 4pm, after police received a phone call regarding the incident.
According to the Springs police spokesman, Capt Johannes Ramphora, two men were underground when they had a quarrel.
Ramphora added that a third man tried to intervene but it was too late as the accused had already hit the victim on the head with a steel pipe.
The victim (age unknown) fainted after sustaining an injury to his head.
He was taken to the Far East Rand Hospital for medical treatment.
Ramphora says the suspect will soon appear in the Springs Magistrates Court as they are still investigating further.
