PT Freeport Indonesia | 2017-2018
Conoco Philips Indonesia | 2018-2012
PT Freeport Indonesia | 2016-2018
PT Freeport Indonesia | 2015-2017
PT Freeport Indonesia
PT Freeport Indonesia | 2013
PT Freeport Indonesia | 2012
PEMDA Jawa Tengah | 2007
Conoco Philips Indonesia | 2007