Cape Town - As employers and the National Union of Mineworkers (NUM) continue to seek a wage settlement, strikers in the civil engineering sector appear to be using increasingly destructive tactics.
Since early last week there have been incidents of workers being intimidated and beaten up, and transport vehicles being attacked.
In the latest attack on a civil engineering site, a group of men, believed by police to be associated with the strike, invaded a sand mine in Macassar early on Wednesday. The mine produces industrial sand used by Afrisam in cement production.
The men overpowered two security guards, assaulted them and torched three diggers and an excavator.
Police spokesman Captain FC van Wyk said a case of arson was being investigated.