That mod uses a custom "ghostless" landmines. These mines leave no ghosts, and thus cannot be replaced by drones, only by the thrower. In my mods the landmines are vanilla, if they are not replaced by the turret for whatever reason, the ghosts will be left, and the bots will attempt to build upon it.
Also, I use the scaled-down version of the artillery graphics to distinguish it from the normal artillery turret.
