Jan 22 (Reuters) - KGHM KGH.WA :
* DEC. SALES OF PAYABLE COPPER AMOUNTED TO 67.2 THOUSAND TONNES, UP 2 PERCENT YOY
* DEC. PAYABLE COPPER PRODUCTION AMOUNTED TO 57.7 THOUSAND TONNES, UP BY 19% YOY
* DEC. SILVER PRODUCTION AMOUNTED TO 122.1 TONNES, OR THE SAME LEVEL AS IN DECEMBER 2017
* DEC. SILVER SALES AMOUNTED TO 101.7 TONNES, DOWN 43 PERCENT YOY