The Wiki states that you could insert blocks like cobble into the "pipe slot" of the miner to let him retract and fill up the tunnel. My problem is I can only put Pipes in there...
Miner working all normal and stuff but he wont let me put some "filling stuff" in the pipe slot so i allways have those nice little holes in my landscape ... (perfect for creeper griefing tho..)
testen with clean MC 1.2.3 jar and only
ModLoaderMP 1.2.3 v3
and TMI 1.2.3