diff --git a/core/assets-raw/sprites/blocks/production/alloy-smelter-top.png b/core/assets-raw/sprites/blocks/production/surge-smelter-top.png
similarity index 100%
rename from core/assets-raw/sprites/blocks/production/alloy-smelter-top.png
rename to core/assets-raw/sprites/blocks/production/surge-smelter-top.png
diff --git a/core/assets-raw/sprites/blocks/production/alloy-smelter.png b/core/assets-raw/sprites/blocks/production/surge-smelter.png
similarity index 100%
rename from core/assets-raw/sprites/blocks/production/alloy-smelter.png
rename to core/assets-raw/sprites/blocks/production/surge-smelter.png
diff --git a/core/src/mindustry/content/Blocks.java b/core/src/mindustry/content/Blocks.java
index 1e7bb15dc4..4268fb20e1 100644
--- a/core/src/mindustry/content/Blocks.java
+++ b/core/src/mindustry/content/Blocks.java
@@ -1035,7 +1035,7 @@ public class Blocks implements ContentList{
             consumes.power(2f);
         }};
 
-        //TODO implement
+        //TODO implement - is this even necessary?
         if(false)
         slagCentrifuge = new GenericCrafter("slag-centrifuge"){{
             requirements(Category.crafting, with(Items.tungsten, 60, Items.graphite, 60, Items.oxide, 40));
@@ -1044,6 +1044,7 @@ public class Blocks implements ContentList{
         }};
 
         //TODO implement
+        //TODO should have a useful turret ammo byproduct?
         //original: consumes.items(with(Items.copper, 3, Items.lead, 4, Items.titanium, 2, Items.silicon, 3));
         if(false)
         surgeCrucible = new GenericCrafter("surge-crucible"){{
diff --git a/core/src/mindustry/content/Liquids.java b/core/src/mindustry/content/Liquids.java
index 27b9ed8c5e..eabc1e9cc8 100644
--- a/core/src/mindustry/content/Liquids.java
+++ b/core/src/mindustry/content/Liquids.java
@@ -73,5 +73,7 @@ public class Liquids implements ContentList{
         }};
 
         //TODO dicyanoacetylene
+
+        //TODO molten lead (maybe)
     }
 }
diff --git a/core/src/mindustry/world/draw/DrawTurret.java b/core/src/mindustry/world/draw/DrawTurret.java
index 550ba365f4..078649fe25 100644
--- a/core/src/mindustry/world/draw/DrawTurret.java
+++ b/core/src/mindustry/world/draw/DrawTurret.java
@@ -78,7 +78,8 @@ public class DrawTurret extends DrawBlock{
     }
 
     /** @return the generated icons to be used for this block. */
-    public TextureRegion[] icons(Turret block){
+    @Override
+    public TextureRegion[] icons(Block block){
         return top.found() ? new TextureRegion[]{base, block.region, top} : new TextureRegion[]{base, block.region};
     }
 }