Cave-In

Hi all,
I had a smelter underground in a mine and wanted to build something next to it. I couldn't place the building neatly where I desired due to a mine support. I built another mine support nearby and destroyed the support in the way. Immediately the cave in dust appeared. stupidly I decided to let the cave in happen thinking a few rubble boulders would drop and probably destroy the smelter which I was willing and happy to replace.
What in fact happened was new mine tiles dropped and merged with the smelter. I am unable to mine these tiles yet right clicking them opens the smelter. It looks daft, like the smelter has a mine wall skin on it.
How can I get rid of these tiles? Anyone know?
If its not possible, the back end of the smelter has that ladder looking bit exposed so I suppose its an attack point. Last time I tried to knock down a ore smelter that wasn't actually on my claim, (it wasn't someone elses btw), I wasn't strong enough to do it. Am I right in thinking that the smelter would be classed as off claim as its down a mine?
I had a smelter underground in a mine and wanted to build something next to it. I couldn't place the building neatly where I desired due to a mine support. I built another mine support nearby and destroyed the support in the way. Immediately the cave in dust appeared. stupidly I decided to let the cave in happen thinking a few rubble boulders would drop and probably destroy the smelter which I was willing and happy to replace.
What in fact happened was new mine tiles dropped and merged with the smelter. I am unable to mine these tiles yet right clicking them opens the smelter. It looks daft, like the smelter has a mine wall skin on it.
How can I get rid of these tiles? Anyone know?
If its not possible, the back end of the smelter has that ladder looking bit exposed so I suppose its an attack point. Last time I tried to knock down a ore smelter that wasn't actually on my claim, (it wasn't someone elses btw), I wasn't strong enough to do it. Am I right in thinking that the smelter would be classed as off claim as its down a mine?