Workers at platinum producer Lonmin's South African shafts continued a wildcat strike for a second day on Wednesday, a union official said.

"At all the shafts at Marikana, nobody reported for night shift and nobody reported for day shift this morning," said Solidarity trade union Deputy General Secretary Gideon du Plessis.

(Reporting by Ed Stoddard, writing by Sherilee Lakmidas; editing by David Dolan)