A protesting miner fleeing the shooting
Security guards have wounded four striking gold miners with rubber bullets near the South African city of Johannesburg, police say.
The mine is partly owned by a company in which President Jacob Zuma's nephew, Khulubuse, and Nelson Mandela's grandson, Zondwa, have a stake.
Miners have been involved in a long-running pay dispute with the company, reports the BBC.
The incident follows the killing of 34 striking miners by police at a platinum mine near Johannesburg two weeks ago.
In Monday's shooting, police spokesman Johannes Ramphora said security guards used rubber bullets to break up a scuffle between striking and non-striking workers at Gold One mine, formerly known as Aurora.
Militant youth leader, Julius Malema addressed the miners there last week, calling on them to make it "ungovernable" until their demands for higher wages was met.
The shooting at the platinum mine two weeks ago sparked a national outcry.
Although police fired the shots, some 270 striking miners were arrested and charged with murdering the 34.
Some of them are expected to be released on Monday after the murder charges were provisionally dropped.