diff --git a/oregen-manager.lua b/oregen-manager.lua
index fc6c5ef..73c8879 100644
--- a/oregen-manager.lua
+++ b/oregen-manager.lua
@@ -33,6 +33,7 @@ local KEEP_STOCKED = {
     ["minecraft:flint"] = 0,
     ["minecraft:andesite"] = 4 * 64,
     ["minecraft:clay_ball"] = 4 * 64,
+    ["minecraft:wither_skeleton_skull"] = 4,
 }
 
 local GLOBAL_LIMS = {
@@ -65,6 +66,10 @@ local LIMIT_EXCEPTIONS = {
         lower = 0,
         upper = 4 * 64,
     },
+    ["minecraft:wither_skeleton_skull"] = {
+        lower = 0,
+        upper = 4,
+    },
 }
 
 -- if these exist, they will be used up
@@ -90,14 +95,14 @@ local PRODUCTS = {
     {"create:crushed_raw_nickel", WASHER_ADDR, limit = 32},
     {"tfmg:bauxite", CRUSHER_ADDR},
     {"tfmg:lithium_nugget", MAIN_STORAGE_ADDR},
-    -- Can reduce these numbers to 12 * 64 in future if it becomes an issue
     {"minecraft:iron_nugget", MAIN_STORAGE_ADDR, keep = 16 * 64, limit = 4 * 64},
     {"minecraft:gold_nugget", MAIN_STORAGE_ADDR, keep = 16 * 64, limit = 4 * 64},
     {"create:copper_nugget", MAIN_STORAGE_ADDR, keep = 16 * 64, limit = 4 * 64},
     {"create:zinc_nugget", MAIN_STORAGE_ADDR, keep = 16 * 64, limit = 4 * 64},
     {"tfmg:nickel_nugget", MAIN_STORAGE_ADDR, keep = 16 * 64, limit = 4 * 64},
     {"oreganized:silver_nugget", MAIN_STORAGE_ADDR, keep = 16 * 64, limit = 4 * 64},
-    {"minecraft:netherrack", MAIN_STORAGE_ADDR, keep = 16 * 64, limit = 4 *64},
+    {"minecraft:netherrack", MAIN_STORAGE_ADDR, keep = 16 * 64, limit = 4 * 64},
+    {"minecraft:blackstone", CRUSHER_ADDR},
 }
 
 -- these will be crafted when needed
@@ -207,6 +212,12 @@ local RECIPES = {
         addr = CRUSHER_ADDR,
         limit = 6,
     },
+    ["minecraft:wither_skeleton_skull"] = {
+        ingredients = {
+            {"minecraft:cobblestone", 2 * 64},
+        },
+        addr = HAUNTER_ADDR,
+        limit = 6,
 }
 
 local SLEEP_T = 20