X0101 EFFECT 33 LIVE 2015-08-07 12:00:00

S-4

0001571371 Summit Materials, LLC 333-206054 0001648751 Concrete Supply of Topeka, Inc. 333-206054-29 0001648752 Lewis & Lewis, Inc. 333-206054-28 0001648732 Colorado County Sand & Gravel Co., L.L.C. 333-206054-27 0001648738 Kilgore Partners, L.P. 333-206054-26 0001648739 Green America Recycling, LLC 333-206054-25 0001648740 Penny's Concrete & Ready Mix, L.L.C. 333-206054-24 0001571406 Bourbon Limestone Co 333-206054-23 0001571422 B&B Resources, Inc. 333-206054-22 0001620241 Troy Vines, Inc 333-206054-21 0001571854 SCS Materials, LLC 333-206054-20 0001571418 Industrial Asphalt, LLC 333-206054-19 0001620242 Buckhorn Materials, LLC 333-206054-18 0001571393 Con-Agg of MO, L.L.C. 333-206054-17 0001571409 Hinkle Contracting Company, LLC 333-206054-16 0001571377 Elam Construction, Inc. 333-206054-15 0001571403 N.R. Hamm Quarry, LLC 333-206054-14 0001571412 N.R. Hamm Contractor, LLC 333-206054-13 0001571410 Hamm, Inc. 333-206054-12 0001571400 Cornejo & Sons, L.L.C. 333-206054-11 0001620248 Summit Materials International, LLC 333-206054-10 0001571376 Summit Materials Holdings II, LLC 333-206054-09 0001571374 Summit Materials Corporations I, Inc. 333-206054-08 0001571415 RK Hall, LLC 333-206054-07 0001571210 Kilgore Companies, LLC 333-206054-06 0001571274 Continental Cement Company, L.L.C. 333-206054-05 0001571397 Austin Materials, LLC 333-206054-04 0001602836 Alleyton Services Company, LLC 333-206054-03 0001602835 Alleyton Resource Company, LLC 333-206054-02 0001571522 Summit Materials Finance Corp. 333-206054-01