| Form: | S-4 |
| CIK: | 0001571371 | | Company Name: | Summit Materials, LLC | | File Number: | 333-198983 |
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| CIK: | 0001571522 | | Company Name: | Summit Materials Finance Corp. | | File Number: | 333-198983-24 |
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| CIK: | 0001571377 | | Company Name: | Elam Construction, Inc. | | File Number: | 333-198983-23 |
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| CIK: | 0001602835 | | Company Name: | Alleyton Resource Company, LLC | | File Number: | 333-198983-21 |
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| CIK: | 0001602836 | | Company Name: | Alleyton Services Company, LLC | | File Number: | 333-198983-20 |
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| CIK: | 0001571397 | | Company Name: | Austin Materials, LLC | | File Number: | 333-198983-19 |
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| CIK: | 0001571274 | | Company Name: | Continental Cement Company, L.L.C. | | File Number: | 333-198983-18 |
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| CIK: | 0001571210 | | Company Name: | Kilgore Companies, LLC | | File Number: | 333-198983-17 |
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| CIK: | 0001571374 | | Company Name: | Summit Materials Corporations I, Inc. | | File Number: | 333-198983-15 |
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| CIK: | 0001571403 | | Company Name: | N.R. Hamm Quarry, LLC | | File Number: | 333-198983-14 |
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| CIK: | 0001571406 | | Company Name: | Bourbon Limestone Co | | File Number: | 333-198983-13 |
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| CIK: | 0001571409 | | Company Name: | Hinkle Contracting Company, LLC | | File Number: | 333-198983-12 |
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| CIK: | 0001571393 | | Company Name: | Con-Agg of MO, L.L.C. | | File Number: | 333-198983-11 |
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| CIK: | 0001571418 | | Company Name: | Industrial Asphalt, LLC | | File Number: | 333-198983-10 |
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| CIK: | 0001571854 | | Company Name: | SCS Materials, LLC | | File Number: | 333-198983-09 |
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| CIK: | 0001571422 | | Company Name: | B&B Resources, Inc. | | File Number: | 333-198983-08 |
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| CIK: | 0001620241 | | Company Name: | Troy Vines, Inc | | File Number: | 333-198983-07 |
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| CIK: | 0001620242 | | Company Name: | Buckhorn Materials, LLC | | File Number: | 333-198983-06 |
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| CIK: | 0001620248 | | Company Name: | Summit Materials International, LLC | | File Number: | 333-198983-05 |
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| CIK: | 0001571376 | | Company Name: | Summit Materials Holdings II, LLC | | File Number: | 333-198983-04 |
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| CIK: | 0001571400 | | Company Name: | Cornejo & Sons, L.L.C. | | File Number: | 333-198983-03 |
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| CIK: | 0001571412 | | Company Name: | N.R. Hamm Contractor, LLC | | File Number: | 333-198983-01 |
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