diff --git a/core/assets/maps/onset.msav b/core/assets/maps/onset.msav
index a3d93eda5e..78cb0c7c36 100644
Binary files a/core/assets/maps/onset.msav and b/core/assets/maps/onset.msav differ
diff --git a/core/src/mindustry/content/ErekirTechTree.java b/core/src/mindustry/content/ErekirTechTree.java
index 04ad8e54eb..64bf774662 100644
--- a/core/src/mindustry/content/ErekirTechTree.java
+++ b/core/src/mindustry/content/ErekirTechTree.java
@@ -18,7 +18,7 @@ public class ErekirTechTree{
         costMultipliers.put(Items.surgeAlloy, 4);
         costMultipliers.put(Items.phaseFabric, 4);
         costMultipliers.put(Items.thorium, 9);
-        costMultipliers.put(Items.graphite, 8);
+        costMultipliers.put(Items.graphite, 9);
 
         Planets.erekir.techTree = nodeRoot("erekir", coreBastion, true, () -> {
             context().researchCostMultipliers = costMultipliers;
@@ -71,6 +71,18 @@ public class ErekirTechTree{
                 });
             });
 
+            //TODO move into turbine condenser?
+            node(plasmaBore, () -> {
+
+                node(impactDrill, erekirSector, () -> {
+                    node(largePlasmaBore, () -> {
+                        node(eruptionDrill, () -> {
+
+                        });
+                    });
+                });
+            });
+
             node(turbineCondenser, () -> {
                 node(beamNode, () -> {
                     node(ventCondenser, erekirSector, () -> {
@@ -93,75 +105,63 @@ public class ErekirTechTree{
                         });
                     });
                 });
-            });
 
-            node(siliconArcFurnace, () -> {
-                node(cliffCrusher, () -> {
-                    node(electrolyzer, erekirSector, () -> {
-                        node(oxidationChamber, () -> {
-                            node(electricHeater, () -> {
-                                node(heatRedirector, () -> {
+                node(reinforcedConduit, erekirSector, () -> {
+                    node(reinforcedPump, () -> {
+                        //TODO T2 pump
+                    });
+
+                    node(reinforcedLiquidJunction, () -> {
+                        node(reinforcedBridgeConduit, () -> {
+
+                        });
+
+                        node(reinforcedLiquidRouter, () -> {
+                            node(reinforcedLiquidContainer, () -> {
+                                node(reinforcedLiquidTank, () -> {
 
                                 });
+                            });
+                        });
+                    });
+                });
 
-                                node(atmosphericConcentrator, () -> {
-                                    node(cyanogenSynthesizer, () -> {
+                node(siliconArcFurnace, () -> {
+                    node(cliffCrusher, () -> {
+                        node(electrolyzer, erekirSector, () -> {
+                            node(oxidationChamber, () -> {
+                                node(electricHeater, () -> {
+                                    node(heatRedirector, () -> {
 
                                     });
-                                });
 
-                                node(carbideCrucible, () -> {
-                                    node(surgeCrucible, () -> {
-                                        node(phaseSynthesizer, () -> {
-                                            node(phaseHeater, () -> {
+                                    node(atmosphericConcentrator, () -> {
+                                        node(cyanogenSynthesizer, () -> {
 
+                                        });
+                                    });
+
+                                    node(carbideCrucible, () -> {
+                                        node(surgeCrucible, () -> {
+                                            node(phaseSynthesizer, () -> {
+                                                node(phaseHeater, () -> {
+
+                                                });
                                             });
                                         });
                                     });
                                 });
                             });
-                        });
 
-                        node(slagIncinerator, () -> {
+                            node(slagIncinerator, () -> {
 
-                            node(slagCentrifuge, () -> {
+                                node(slagCentrifuge, () -> {
 
-                            });
+                                });
 
-                            node(heatReactor, () -> {
-
-                            });
-                        });
-                    });
-                });
-            });
-
-            //TODO move into turbine condenser?
-            node(plasmaBore, () -> {
-
-                node(impactDrill, erekirSector, () -> {
-                    node(largePlasmaBore, () -> {
-                        node(eruptionDrill, () -> {
-
-                        });
-                    });
-                });
-            });
-
-            node(reinforcedConduit, erekirSector, () -> {
-                node(reinforcedPump, () -> {
-                    //TODO T2 pump
-                });
-
-                node(reinforcedLiquidJunction, () -> {
-                    node(reinforcedBridgeConduit, () -> {
-
-                    });
-
-                    node(reinforcedLiquidRouter, () -> {
-                        node(reinforcedLiquidContainer, () -> {
-                            node(reinforcedLiquidTank, () -> {
+                                node(heatReactor, () -> {
 
+                                });
                             });
                         });
                     });
diff --git a/core/src/mindustry/content/Planets.java b/core/src/mindustry/content/Planets.java
index f3e45c83a0..caf7b1139d 100644
--- a/core/src/mindustry/content/Planets.java
+++ b/core/src/mindustry/content/Planets.java
@@ -57,12 +57,6 @@ public class Planets{
             totalRadius += 2.6f;
             lightSrcTo = 0.5f;
             lightDstFrom = 0.2f;
-
-            unlockedOnLand.addAll(
-            Blocks.plasmaBore, Blocks.duct,
-            Blocks.turbineCondenser, Blocks.breach,
-            Blocks.coreCitadel
-            );
         }};
 
         //TODO names
diff --git a/core/src/mindustry/content/UnitTypes.java b/core/src/mindustry/content/UnitTypes.java
index e09491d0b1..c80d59aa17 100644
--- a/core/src/mindustry/content/UnitTypes.java
+++ b/core/src/mindustry/content/UnitTypes.java
@@ -2700,9 +2700,11 @@ public class UnitTypes{
 
             outlineColor = Pal.darkOutline;
             lowAltitude = false;
+            mineWalls = true;
+            mineFloor = false;
             flying = true;
-            mineSpeed = 6.5f;
-            mineTier = 1;
+            mineSpeed = 4f;
+            mineTier = 4;
             buildSpeed = 0.8f;
             drag = 0.06f;
             speed = 2.9f;
@@ -2758,9 +2760,11 @@ public class UnitTypes{
             outlineColor = Pal.darkOutline;
             lowAltitude = false;
             flying = true;
+            mineWalls = true;
             targetAir = false;
-            mineSpeed = 8f;
-            mineTier = 2;
+            mineFloor = false;
+            mineSpeed = 5f;
+            mineTier = 4;
             buildSpeed = 1.4f;
             drag = 0.06f;
             speed = 2.8f;
@@ -2816,8 +2820,10 @@ public class UnitTypes{
             lowAltitude = false;
             flying = true;
             targetAir = false;
-            mineSpeed = 8f;
-            mineTier = 3;
+            mineWalls = true;
+            mineFloor = false;
+            mineSpeed = 6f;
+            mineTier = 4;
             buildSpeed = 2f;
             drag = 0.06f;
             speed = 2.6f;
diff --git a/core/src/mindustry/entities/comp/MinerComp.java b/core/src/mindustry/entities/comp/MinerComp.java
index 11f9b1af47..c9759b9c8a 100644
--- a/core/src/mindustry/entities/comp/MinerComp.java
+++ b/core/src/mindustry/entities/comp/MinerComp.java
@@ -23,7 +23,8 @@ abstract class MinerComp implements Itemsc, Posc, Teamc, Rotc, Drawc{
     transient float mineTimer;
     @Nullable @SyncLocal Tile mineTile;
 
-    public boolean canMine(Item item){
+    public boolean canMine(@Nullable Item item){
+        if(item == null) return false;
         return type.mineTier >= item.hardness;
     }
 
@@ -35,9 +36,28 @@ abstract class MinerComp implements Itemsc, Posc, Teamc, Rotc, Drawc{
         return mineTile != null && !this.<Unit>self().activelyBuilding();
     }
 
+    public @Nullable Item getMineResult(@Nullable Tile tile){
+        if(tile == null) return null;
+        Item result;
+        if(type.mineFloor && tile.block() == Blocks.air){
+            result = tile.drop();
+        }else if(type.mineWalls){
+            result = tile.wallDrop();
+        }else{
+            return null;
+        }
+
+        return canMine(result) ? result : null;
+    }
+
     public boolean validMine(Tile tile, boolean checkDst){
-        return !(tile == null || tile.block() != Blocks.air || (!within(tile.worldx(), tile.worldy(), type.miningRange) && checkDst)
-        || tile.drop() == null || !canMine(tile.drop()));
+        if(tile == null) return false;
+
+        if(checkDst && !within(tile.worldx(), tile.worldy(), type.miningRange)){
+            return false;
+        }
+
+        return getMineResult(tile) != null;
     }
 
     public boolean validMine(Tile tile){
@@ -50,9 +70,12 @@ abstract class MinerComp implements Itemsc, Posc, Teamc, Rotc, Drawc{
 
     @Override
     public void update(){
-        Building core = closestCore();
+        if(mineTile == null) return;
 
-        if(core != null && mineTile != null && mineTile.drop() != null && !acceptsItem(mineTile.drop()) && within(core, mineTransferRange) && !offloadImmediately()){
+        Building core = closestCore();
+        Item item = getMineResult(mineTile);
+
+        if(core != null && item != null && !acceptsItem(item) && within(core, mineTransferRange) && !offloadImmediately()){
             int accepted = core.acceptStack(item(), stack().amount, this);
             if(accepted > 0){
                 Call.transferItemTo(self(), item(), accepted,
@@ -65,8 +88,7 @@ abstract class MinerComp implements Itemsc, Posc, Teamc, Rotc, Drawc{
         if((!net.client() || isLocal()) && !validMine(mineTile)){
             mineTile = null;
             mineTimer = 0f;
-        }else if(mining()){
-            Item item = mineTile.drop();
+        }else if(mining() && item != null){
             mineTimer += Time.delta *type.mineSpeed;
 
             if(Mathf.chance(0.06 * Time.delta)){
diff --git a/core/src/mindustry/input/InputHandler.java b/core/src/mindustry/input/InputHandler.java
index d8a580d212..1e501d7174 100644
--- a/core/src/mindustry/input/InputHandler.java
+++ b/core/src/mindustry/input/InputHandler.java
@@ -1048,11 +1048,9 @@ public abstract class InputHandler implements InputProcessor, GestureListener{
 
     boolean canMine(Tile tile){
         return !Core.scene.hasMouse()
-            && tile.drop() != null
             && player.unit().validMine(tile)
-            && !((!Core.settings.getBool("doubletapmine") && tile.floor().playerUnmineable) && tile.overlay().itemDrop == null)
-            && player.unit().acceptsItem(tile.drop())
-            && tile.block() == Blocks.air;
+            && player.unit().acceptsItem(player.unit().getMineResult(tile))
+            && !((!Core.settings.getBool("doubletapmine") && tile.floor().playerUnmineable) && tile.overlay().itemDrop == null);
     }
 
     /** Returns the tile at the specified MOUSE coordinates. */
diff --git a/core/src/mindustry/type/UnitType.java b/core/src/mindustry/type/UnitType.java
index a8e4fcc44e..33c730da97 100644
--- a/core/src/mindustry/type/UnitType.java
+++ b/core/src/mindustry/type/UnitType.java
@@ -127,6 +127,7 @@ public class UnitType extends UnlockableContent{
     public int ammoCapacity = -1;
     public AmmoType ammoType = new ItemAmmoType(Items.copper);
     public int mineTier = -1;
+    public boolean mineWalls = false, mineFloor = true;
     public float buildSpeed = -1f, mineSpeed = 1f;
     public Sound mineSound = Sounds.minebeam;
     public float mineSoundVolume = 0.6f;
diff --git a/core/src/mindustry/ui/dialogs/PlanetDialog.java b/core/src/mindustry/ui/dialogs/PlanetDialog.java
index 9a8f21861e..8fc6120251 100644
--- a/core/src/mindustry/ui/dialogs/PlanetDialog.java
+++ b/core/src/mindustry/ui/dialogs/PlanetDialog.java
@@ -761,7 +761,7 @@ public class PlanetDialog extends BaseDialog implements PlanetInterfaceRenderer{
         }
 
         if(state.planet.hasGrid()){
-            hovered = state.planet.getSector(planets.cam.getMouseRay(), PlanetRenderer.outlineRad);
+            hovered = Core.scene.getDialog() == this ? state.planet.getSector(planets.cam.getMouseRay(), PlanetRenderer.outlineRad) : null;
         }else if(state.planet.isLandable()){
             boolean wasNull = selected == null;
             //always have the first sector selected.