Jesus dude, I didn't even do that. All the buildings are being moved to a new world, and since nothing from a few days ago on will be saved, there was a nuclear war (I wasn't there when it happened and my whole base was destroyed, and even if it wasn't I don't have the tech to make nukes). If I wanted to destroy stuff I'd just do that, not build a yummy triple meat treat factory so that maybe I'll destroy peoples power lines. Calm yourself.
if your way of playing affects other players in a very negative way, then you're griefing, if intended or not.
Tested and can confirm, they can be picked up with a portal gun. Gravity Gun? No idea.
gravity gun also can pick it up, basically if a portalgun can, a gravity gun can aswell.