Could these be put to any use?

[eugene13]

Leather workers often use a marble platen

 

[westerner]

what do they make fertilizer out of ?

Man, THAT was very funny, and quite true. And vaguely reminiscent of my mindset as I wander the junkyard

 

[RJSakowski]

While drops from solid surface (e.g. Corian) countertops may not be an ideal substitute for a surface plate, they would work very well for backing plates when milling. They can be machined and, unlike mdf or plywood, are virtually incompressible.

 

[AGCB97]

Build a bigger warehouse and file them away for a future idea!