
Whose DC is it - Intel's maybe?
Intel's formerly vacant chip fabs in Santa Clara [0], maybe? There's an Intel white-paper describing their high density sub 1.07 PUE design [1].
Nuclear because their hot aisles can reach 54 degrees Celsius.
[0] http://datacenterfrontier.com/intel-data-center-new-heights-efficiency/
[1] http://www.intel.com/content/dam/www/public/us/en/documents/best-practices/intel-it-extremely-energy-efficient-high-density-data-centers-paper.pdf