WARSAW, April 23 (Reuters) - Polish copper producer KGHM Polska Miedz said on Monday its first-quarter copper sales fell 12 percent year on year to 133,400 tonnes.
KGHM also said in a statement that silver sales fell in the same quarter by 16 percent to 212.6 tonnes.
(Reporting by Marcin Goclowski and Anna Koper; editing by David Evans)