| Accession Number: | 0001193125-13-177939 |
| Submission Type: | POS AM |
| CIK: | 0001449732 | | Company Name: | Willbros Group, Inc.\NEW\ | | File Number: | 333-174406 |
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| CIK: | 0001521257 | | Company Name: | Chapman Construction Co., L.P. | | File Number: | 333-174406-34 |
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| CIK: | 0001521190 | | Company Name: | Chapman Holding Co., Inc. | | File Number: | 333-174406-33 |
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| CIK: | 0001521192 | | Company Name: | Construction & Turnaround Services, L.L.C. | | File Number: | 333-174406-32 |
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| CIK: | 0001521189 | | Company Name: | Chapman Construction Management Co., Inc. | | File Number: | 333-174406-31 |
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| CIK: | 0001521193 | | Company Name: | Halpin Line Construction LLC | | File Number: | 333-174406-30 |
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| CIK: | 0001521195 | | Company Name: | Willbros Utility T&D Group Common Paymaster, LLC | | File Number: | 333-174406-28 |
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| CIK: | 0001521196 | | Company Name: | Willbros Utility T&D Holdings, LLC | | File Number: | 333-174406-27 |
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| CIK: | 0001521200 | | Company Name: | Lineal Industries, Inc. | | File Number: | 333-174406-22 |
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| CIK: | 0001521209 | | Company Name: | Willbros Downstream, LLC | | File Number: | 333-174406-21 |
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| CIK: | 0001521208 | | Company Name: | Willbros Downstream of Oklahoma, Inc. | | File Number: | 333-174406-20 |
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| CIK: | 0001521201 | | Company Name: | Premier Utility Services, LLC | | File Number: | 333-174406-19 |
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| CIK: | 0001521202 | | Company Name: | Skibeck Pipeline Company, Inc. | | File Number: | 333-174406-18 |
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| CIK: | 0001521203 | | Company Name: | Skibeck PLC, Inc. | | File Number: | 333-174406-17 |
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| CIK: | 0001521204 | | Company Name: | Trafford Corp | | File Number: | 333-174406-16 |
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| CIK: | 0001521205 | | Company Name: | UtilX Overseas Holdings, Inc. | | File Number: | 333-174406-14 |
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| CIK: | 0001521207 | | Company Name: | Willbros Construction California (U.S.), Inc. | | File Number: | 333-174406-13 |
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| CIK: | 0001521206 | | Company Name: | Willbros Construction (U.S.), LLC | | File Number: | 333-174406-12 |
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| CIK: | 0001521210 | | Company Name: | Willbros Energy Services Co | | File Number: | 333-174406-11 |
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| CIK: | 0001521213 | | Company Name: | Willbros Engineers (U.S.), LLC | | File Number: | 333-174406-10 |
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| CIK: | 0001521212 | | Company Name: | Willbros Engineering California (U.S.), Inc. | | File Number: | 333-174406-09 |
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| CIK: | 0001521214 | | Company Name: | Willbros Government Services (U.S.), LLC | | File Number: | 333-174406-08 |
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| CIK: | 0001521215 | | Company Name: | Willbros Midstream Services (U.S.), LLC | | File Number: | 333-174406-07 |
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| CIK: | 0001521216 | | Company Name: | Willbros Project Services (U.S.), LLC | | File Number: | 333-174406-06 |
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| CIK: | 0001521217 | | Company Name: | Willbros Refinery & Maintenance Services (U.S.), LLC | | File Number: | 333-174406-05 |
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| CIK: | 0001521191 | | Company Name: | Premier West Coast Services, Inc. | | File Number: | 333-174406-04 |
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| CIK: | 0001521219 | | Company Name: | Willbros United States Holdings, Inc. | | File Number: | 333-174406-03 |
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| CIK: | 0001521220 | | Company Name: | Willbros Engineers, LLC | | File Number: | 333-174406-02 |
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| CIK: | 0001521218 | | Company Name: | Willbros T&D Services, LLC | | File Number: | 333-174406-01 |
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