X0101 EFFECT 33 LIVE 2019-10-28 0001104659-19-055321 POS AM 0001441849 CLOUD PEAK ENERGY INC. 333-214869 0001493144 Cloud Peak Energy Resources LLC 333-214869-27 0001496425 CLOUD PEAK ENERGY FINANCE CORP. 333-214869-26 0001496459 ANTELOPE COAL LLC 333-214869-25 0001599187 Arrowhead I LLC 333-214869-24 0001599162 Arrowhead II LLC 333-214869-23 0001599186 Arrowhead III LLC 333-214869-22 0001599161 Big MEtal Coal Co. LLC 333-214869-21 0001496427 CABALLO ROJO HOLDINGS LLC 333-214869-20 0001496426 CABALLO ROJO LLC 333-214869-19 0001599180 Cloud Peak Energy Logistics LLC 333-214869-18 0001684366 Cloud Peak Energy Logistics I LLC 333-214869-17 0001496424 CLOUD PEAK ENERGY SERVICES Co 333-214869-16 0001496691 CORDERO MINING HOLDINGS LLC 333-214869-15 0001496692 CORDERO MINING LLC 333-214869-14 0001599175 Cordero Oil & Gas LLC 333-214869-13 0001496693 KENNECOTT COAL SALES LLC 333-214869-12 0001496695 NERCO COAL LLC 333-214869-11 0001496696 NERCO COAL SALES LLC 333-214869-10 0001496694 NERCO LLC 333-214869-09 0001496651 PROSPECT LAND & DEVELOPMENT LLC 333-214869-08 0001496664 RESOURCE DEVELOPMENT LLC 333-214869-07 0001496663 Sequatchie Valley Coal Corp 333-214869-06 0001496662 SPRING CREEK COAL LLC 333-214869-05 0001496661 WESTERN MINERALS LLC 333-214869-04 0001599166 Youngs Creek Holdings I LLC 333-214869-03 0001599163 Youngs Creek Holdings II LLC 333-214869-02 0001398283 YOUNGS CREEK MINING CO LLC 333-214869-01