Analysis - On 'massacre' anniversary, South Africa mines still volatile

MARIKANA, South Africa (Reuters) - A year after South Africa's bloodiest post-apartheid labour incident awoke the world to the potential for unrest in the country's mines, the industry still suffers from worker poverty, pay disputes, shrinking profits and a violent union feud.

At Lonmin's Marikana mine where 34 striking platinum workers were shot dead by police on August 16, 2012 in killings that shocked South Africa and the world, memorial services are planned for Friday by politicians, unions and civic leaders.