Help Identifying Machinery

Hello all, I am trying to figure out what this machine/apparatus is, anyone have any idea? Please let me. Thanks! Mc1

It’s really hard to make out what it is. Do you have any better pictures?

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I have one more, someone mentioned it is a sand exchanger

Correct orientation might help with identification and scale (The thing is quite large):


It appears to be some type of a heat exchanger.