X0101 EFFECT 33 LIVE 2016-10-06 12:00:00

S-4

0001571371 Summit Materials, LLC 333-213904 0001602836 Alleyton Services Company, LLC 333-213904-36 0001571397 Austin Materials, LLC 333-213904-35 0001571274 Continental Cement Company, L.L.C. 333-213904-34 0001571210 Kilgore Companies, LLC 333-213904-33 0001571415 RK Hall, LLC 333-213904-32 0001571374 Summit Materials Corporations I, Inc. 333-213904-31 0001571376 Summit Materials Holdings II, LLC 333-213904-30 0001620248 Summit Materials International, LLC 333-213904-29 0001648751 Concrete Supply of Topeka, Inc. 333-213904-28 0001571400 Cornejo & Sons, L.L.C. 333-213904-27 0001571410 Hamm, Inc. 333-213904-26 0001571412 N.R. Hamm Contractor, LLC 333-213904-25 0001571403 N.R. Hamm Quarry, LLC 333-213904-24 0001648740 Penny's Concrete & Ready Mix, L.L.C. 333-213904-23 0001685584 R.D. Johnson Excavating Company, LLC 333-213904-22 0001571406 Bourbon Limestone Co 333-213904-21 0001571409 Hinkle Contracting Company, LLC 333-213904-20 0001571393 Con-Agg of MO, L.L.C. 333-213904-19 0001648739 Green America Recycling, LLC 333-213904-18 0001685588 Sierra Ready Mix Ltd Liability Co 333-213904-17 0001685557 American Materials Company, LLC 333-213904-16 0001685578 H.C. Rustin Corp 333-213904-15 0001620242 Buckhorn Materials, LLC 333-213904-14 0001648732 Colorado County Sand & Gravel Co., L.L.C. 333-213904-13 0001571418 Industrial Asphalt, LLC 333-213904-12 0001685583 Pelican Asphalt Co LLC 333-213904-11 0001571854 SCS Materials, LLC 333-213904-10 0001620241 Troy Vines, Inc 333-213904-09 0001571422 B&B Resources, Inc. 333-213904-08 0001648738 Kilgore Partners, L.P. 333-213904-07 0001659384 LeGrand Johnson Construction Co. 333-213904-06 0001685574 Boxley Materials Co 333-213904-05 0001648752 Lewis & Lewis, Inc. 333-213904-04 0001571522 Summit Materials Finance Corp. 333-213904-03 0001571377 Elam Construction, Inc. 333-213904-02 0001602835 Alleyton Resource Company, LLC 333-213904-01