South African police fired rubber bullets into another gold mine protest today, Reuters reported.The workers were protesting outside of a mine run by Harmony Gold, causing the company to close a day early for the Christmas season. The protest broke out after 600 employees who had gone on strike on December 15 were suspended.
More from GlobalPost: Gold miners sue over lung disease
"We have made it clear that no violence will be tolerated and to ensure the safety of our employees it has become imperative to close the shaft until the labor issues have been resolved," Tom Smith, Harmony's chief operating officer, told the Wall Street Journal.
South Africa has seen major labor unrest this year, and growing inequality and poor living conditions are to blame, the WSJ said. In the "Marikana massacre" from August, police shot and killed 34 miners.