Where did it all go? Couldn’t people tell the rock fragments of used for public works, etc. aren’t coming from a traditional quarry? Just seems like a whole bunch of rock waste out there that nobody has ever explained or brought up as far as I know? .... any ideas? This been covered somewhere?
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Is mostly see ones with massive grinding heads; I think the melted part is just at the sides to make a smoothie wall. Also, melted rock still has to go somewhere right? If it was all melted away, still has to be accounted for.