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U.S. Department of Energy: IMG_3249
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U.S. Department of Energy: IMG_3260
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U.S. Department of Energy: IMG_3273
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U.S. Department of Energy: IMG_3289
©
U.S. Department of Energy: IMG_3295
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U.S. Department of Energy: IMG_3362
©
U.S. Department of Energy: IMG_3365
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U.S. Department of Energy: IMG_3376
©
U.S. Department of Energy: IMG_3380
©
U.S. Department of Energy: IMG_3400