diff --git a/changelog.txt b/changelog.txt
index 648cbfe..1258676 100644
--- a/changelog.txt
+++ b/changelog.txt
@@ -1,4 +1,10 @@
 ---------------------------------------------------------------------------------------------------
+Version: 0.5.9
+Date: 2021-10-11
+  Fixes:
+    - SE: Balance core mining
+    - SE: Landfill recipe
+---------------------------------------------------------------------------------------------------
 Version: 0.5.8
 Date: 2021-08-05
   Changes:
diff --git a/data-final-fixes.lua b/data-final-fixes.lua
index 690e0ea..9ae9778 100644
--- a/data-final-fixes.lua
+++ b/data-final-fixes.lua
@@ -40,4 +40,7 @@ if mods["space-exploration"] then
   -- Organization
   data.raw.item["lead-plate"].subgroup = "plates"
   data.raw.recipe["lead-plate"].subgroup = "plates"
+
+  -- core mining balancing
+  util.add_to_product("se-core-fragment-omni", "lead-ore", -4)
 end
diff --git a/info.json b/info.json
index 0bc7adb..f47bd2d 100644
--- a/info.json
+++ b/info.json
@@ -1,6 +1,6 @@
 {
     "name": "bzlead",
-    "version": "0.5.8",
+    "version": "0.5.9",
     "factorio_version": "1.1",
     "title": "Lead",
     "author": "Brevven",
diff --git a/lead-recipe-se.lua b/lead-recipe-se.lua
index e5c6ffa..663e792 100644
--- a/lead-recipe-se.lua
+++ b/lead-recipe-se.lua
@@ -4,6 +4,23 @@ local util = require("__bzlead__.data-util");
 if mods["space-exploration"] then
   se_delivery_cannon_recipes[util.me.lead_ore] = {name= util.me.lead_ore}
   se_delivery_cannon_recipes[util.me.lead_plate] = {name= util.me.lead_plate}
+
+  data:extend({
+  {
+    type = "recipe",
+    icons = {
+      { icon = "__base__/graphics/icons/landfill.png", icon_size = 64, icon_mipmaps = 3 },
+      { icon = "__bzlead__/graphics/icons/lead-ore.png", icon_size = 64, scale = 0.25},
+    },
+    name = "landfill-lead-ore",
+    category = "hard-recycling",
+    order = "z-b-lead",
+    subgroup = "terrain",
+    result = "landfill",
+    ingredients = {{"lead-ore", 50}},
+  }
+  })
+
   if mods["Krastorio2"] then
     data:extend({
     {