To perform this glitch, all we need is a Crystal or Ore seam next to a wall with resources in it as specified in Cror.map.   To my knowledge this is not possible in vanilla LRR, as no tile next to a Seam has resources.   Drill (or laser) the seam down at least one, but not to completion. Then drill the wall next to it that has the resources in in. The wall will collapse along with any walls that would normally collapse, yet they will all also remain standing.   Stra