Entity Information

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Economic entity name	CLOUD PEAK ENERGY INC.
CIK	0001441849
Accession number	0001104659-17-009687
Generator	IBM Cognos
SEC filing page	http://www.sec.gov/Archives/edgar/data/1441849/000110465917009687/0001104659-17-009687-index.htm
XBRL Instance	http://www.sec.gov/Archives/edgar/data/1441849/000110465917009687/cld-20161231.xml
XBRL Cloud Viewer	https://edgardashboard.xbrlcloud.com/flex/viewer/XBRLViewer.html#instance=http://www.sec.gov/Archives/edgar/data/1441849/000110465917009687/cld-20161231.xml