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U.S. Department of Energy: 021
©
U.S. Department of Energy: 014
©
U.S. Department of Energy: 154
©
U.S. Department of Energy: 207
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U.S. Department of Energy: 093
©
U.S. Department of Energy: 169
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U.S. Department of Energy: 205
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U.S. Department of Energy: 004
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U.S. Department of Energy: 048
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U.S. Department of Energy: 101
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U.S. Department of Energy: 127
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U.S. Department of Energy: 247
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U.S. Department of Energy: 243
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U.S. Department of Energy: 002
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U.S. Department of Energy: 136
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U.S. Department of Energy: 124
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U.S. Department of Energy: 235
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U.S. Department of Energy: 134
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U.S. Department of Energy: 038
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U.S. Department of Energy: 089
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U.S. Department of Energy: 055
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U.S. Department of Energy: 172
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U.S. Department of Energy: 244
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U.S. Department of Energy: 215
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U.S. Department of Energy: 001
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U.S. Department of Energy: 223
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U.S. Department of Energy: 040
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U.S. Department of Energy: 096
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U.S. Department of Energy: 032
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U.S. Department of Energy: 167