The scale of this is impressive regardless of whether or not you're a bitcoin believer (I'm neutral, if it works long term, great, if not something better will come along).

This bit in particular is impressive:

"The mine operators told me that each warehouse took fifteen days to construct, and an additional ten days to fill up with hardware and get it all hashing away. The concrete was still drying on some of the buildings."

8 of those... I wonder who supplied the chips that do the mining and how much energy that facility uses.

"This entire facility has several petahashes of mining power, accounting for perhaps 5% of the entire bitcoin network. Damn."

I like their cooling solution as well!