By Bloomberg News (Bloomberg) — Poland is making a rare charge into gold. The country added about 9 metric tons to its bullion reserves in July and August as prices dropped, International Monetary Fund data show. That’s Poland’s biggest purchase since 1998 and among the largest additions by a European Union nation since then. The National Bank of Poland declined to comment on its reserves, but economists said gold’s recent drop to the lowest price in more than a year has helped make the metal more attractive.