MARIKANA, South Africa (AP) — Mine worker Mziseni Zotyatha lives in a neat, one-room metal shack with plastic sheeting stretched above his bed to keep out the rain. Four years after South African police shot dead 34 striking Marikana miners driven to fury by poor wages and living conditions, Lonmin has failed to provide the homes it promised for several thousand workers, says Amnesty International in a report published Monday. Squalid housing settlements without sewer systems or other basic services are a problem for mine workers across South Africa, whose economy was built on the mining industry and its black, often migrant, labor. Lonmin is in breach of its legal agreement with the South African government to improve housing at the mine, says the Amnesty report which asks why the government hasn't enforced the deal or revoked Lonmin's mining license. The miners walk daily between the platinum mine, ringed by razor wire, and their tiny houses pieced together from corrugated metal. "The catastrophic events of August 2012 should have been a decisive wake-up call to Lonmin that it must address these truly appalling living conditions," said Deprose Muchena, Amnesty's southern Africa regional director.