I worked on a campus where they were building prototype manufacturing processes with these tools. The building those tools were housed in had a foundation that

I worked on a campus where they were building prototype manufacturing processes with these tools. The building those tools were housed in had a foundation that was iirc 30’ of a specialized concrete mix. I was chatting with some of the construction engineers over coffee and the consensus was that 10,000 years from now, some archeologists would be pondering wtf this giant concrete platform was for.