new lattice (#19820)

code/game/objects/structures/lattice.dm

@@ -91,6 +91,14 @@
 		C.deconstruct()
 	..()
 
+/obj/structure/lattice/catwalk/mining
+	name = "reinforced catwalk"
+	desc = "A heavily reinforced catwalk used to build bridges in hostile environments. It doesn't look like anything could make this budge."
+	resistance_flags = INDESTRUCTIBLE
+
+/obj/structure/lattice/catwalk/mining/deconstruction_hints(mob/user)
+	return
+
 /obj/structure/lattice/catwalk/clockwork
 	name = "clockwork catwalk"
 	icon = 'icons/obj/smooth_structures/catwalk_clockwork.dmi'

code/game/turfs/turf.dm

@@ -202,7 +202,7 @@
 // Removes all signs of lattice on the pos of the turf -Donkieyo
 /turf/proc/RemoveLattice()
 	var/obj/structure/lattice/L = locate(/obj/structure/lattice, src)
-	if(L)
+	if(L && !(L.resistance_flags & INDESTRUCTIBLE))
 		qdel(L)
 
 /turf/proc/dismantle_wall(devastated = FALSE, explode = FALSE)