June 26 (Reuters) - Poland's KGHM :
* The miner will decide at the start of 2016 about the potential second stage of exploration at its Chilean mine Sierra Gorda, head of KGHM's development department Maciej Konski said.
* KGHM will start to consolidate the Sierra Gorda mine into the group's results starting from the third quarter this year, KGHM's Investor Relations chief said.
* Sierra Gorda is KGHM's biggest overseas asset, which made its first copper shipment only last year. Further company coverage: (Reporting by Adrian Krajewski)