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U.S. Department of Energy: DSC_0004
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U.S. Department of Energy: DSC_0011
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U.S. Department of Energy: DSC_0012
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U.S. Department of Energy: DSC_0013
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U.S. Department of Energy: DSC_0015
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U.S. Department of Energy: DSC_0021
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U.S. Department of Energy: DSC_0022
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U.S. Department of Energy: DSC_0024
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U.S. Department of Energy: DSC_0032
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U.S. Department of Energy: DSC_0041
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U.S. Department of Energy: DSC_0043
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U.S. Department of Energy: DSC_0048
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U.S. Department of Energy: DSC_0055
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U.S. Department of Energy: DSC_0057
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U.S. Department of Energy: DSC_0062
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U.S. Department of Energy: DSC_0067
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U.S. Department of Energy: DSC_0068
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U.S. Department of Energy: DSC_0070
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U.S. Department of Energy: DSC_0071
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U.S. Department of Energy: DSC_0073
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U.S. Department of Energy: DSC_0076
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U.S. Department of Energy: DSC_0078
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U.S. Department of Energy: DSC_0081
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U.S. Department of Energy: DSC_0082
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U.S. Department of Energy: DSC_0087
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U.S. Department of Energy: DSC_0089
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U.S. Department of Energy: DSC_0091
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U.S. Department of Energy: DSC_0092
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U.S. Department of Energy: DSC_0114
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U.S. Department of Energy: DSC_0118