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Chapter I
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Mine Safety and Health Administration, Department of Labor
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1 – 199 |
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Chapter II
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Bureau of Safety and Environmental Enforcement, Department of the Interior
|
200 – 299 |
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Chapter IV
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Geological Survey, Department of the Interior
|
400 – 499 |
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Chapter V
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Bureau of Ocean Energy Management, Department of the Interior
|
500 – 599 |
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Chapter VII
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Office of Surface Mining Reclamation and Enforcement, Department of the Interior
|
700 – 999 |
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Chapter XII
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Office of Natural Resources Revenue, Department of the Interior
|
1200 – 1299 |
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