NEW : Workers at another South African mine return to work . NEW : A new report says that the number of people living in extreme poverty has fallen by more than half since 1990. The incident marks the latest labor discontent in the nation 's mining heartland . South Africans held memorial services nationwide Thursday for victims of clashes at the Lonmin Marikana mine . South Africans held memorial services Thursday for 44 killed in clashes at the Lonmin mine .
NEW : Workers at another South African mine return to work . NEW : A new report says that the number of people living in extreme poverty has fallen by more than half since 1990. The incident marks the latest labor discontent in the nation 's mining heartland . South Africans held memorial services Thursday for 44 killed in clashes at the Lonmin mine .