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conceptually sure; but size-wise they are so different as to warrant valid questions about ROI.

Chicago Pile 1 ran for 12 years, ITER started ~12 years ago and plans to run into the 2030s at least. Budget and headcount would likely be vastly different too, I’d welcome any educated guesses. Sometimes quantity has a quality of its own, as they say.

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Sure but those are not really equivalent/comparable in scale; just looking at power/size and conceptual distance from commercial viability, the Chicago pile does not even match up to something like SPARC or JET, much less ITER.

A more fitting comparison to ITER would be something like Fermi-1 or other prototype designs at almost commercial scale, IMO, and those were multi-year, large projects too (and fission is much simpler than fusion, which obviously also helps).

The X-10 reactor at Argonne went critical less than a year after CP-1, with a power of 500 kW, rising to 4 MW in 1944. The Hanford B reactor, with a power of 250 MW, was in operation less than two years after CP-1 went critical.

Correction: the X-10 reactor was at Oak Ridge, not Argonne.

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