1 MIN. DE LECTURA
LIMA, Nov 10 (Reuters) - Peru's top copper producer, Antamina, said that a strike by unionized workers that started at midnight (0500 GMT) on Monday had only partially affected output operations by mid-morning.
"The stoppage is partial," said Martin Calderon, a spokesman for the miner. He declined to give further details on output levels.
Reporting By Patricia Velez; Writing by Mitra Taj; Editing by Richard Lough and W Simon