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North West premier Thandi Modise says urgent intervention is required at Anglo American Platinum in Rustenburg after 13 people were injured in alleged union rivalry.
North West Police said the incident took place at the Siphumelele shaft at Amplats in a clash between security guards and workers.
Brigadier Thulani Ngubane said people were hacked with pangas and sharp objects, while others were shot with security rubber bullets.
He said a group about 1000 strong had attacked four people who were at the union offices.
Mine security intervened and fired rubber bullets.
