diff --git a/oregen-manager.lua b/oregen-manager.lua
index 097d183..3cf8da1 100644
--- a/oregen-manager.lua
+++ b/oregen-manager.lua
@@ -12,9 +12,6 @@ local EXPORT_ADDR = "Output"
 -- amount to keep in EXPORT_STORAGE
 local KEEP_STOCKED = {
     ["minecraft:iron_nugget"] = 4 * 64,
-    ["minecraft:gold_nugget"] = 4 * 64,
-    ["create:zinc_nugget"] = 4 * 64,
-    ["create:copper_nugget"] = 4 * 64,
 }
 
 local GLOBAL_LIMS = {
@@ -26,39 +23,36 @@ local LIMIT_EXCEPTIONS = {}
 
 local CRUSHABLE = {
     "create:crimsite",
-    "create:asurine",
-    "create:veridium",
-    "create:ochrum",
 }
 local WASHABLE = {
 }
 local MELTABLE = {
     "create:crushed_raw_iron",
-    "create:crushed_raw_zinc",
-    "create:crushed_raw_gold",
-    "create:crushed_raw_copper",
 }
 local RECIPES = {
     ["minecraft:iron_nugget"] = {
-        {"minecraft:iron_nugget", 60},
+        {"create:crimsite", 60},
         {"minecraft:gravel", 24},
     },
-    ["minecraft:gold_nugget"] = {
-        {"minecraft:gold_nugget", 64},
-        {"minecraft:gravel", 64},
-    },
-    ["create:zinc_nugget"] = {
-        {"create:zinc_nugget", 64},
-        {"minecraft:gravel", 32},
-    },
-    ["create:copper_nugget"] = {
-        {"create:copper_nugget", 63},
-        {"minecraft:gravel", 18},
-    },
 }
 
 local SLEEP_T = 20
 
+-- logic: keep a certain amount of certain items in stock in STOCK via
+-- RECIPES. while the number is over a certain amount, excess can be used
+-- to keep items in stock in EXPORT_STORAGE
+-- e.g. lower_lim is 100, upper_lim is 200. export_amt is 100
+-- when below 100, go into recipe mode, producing the item
+-- when above 200, go into export mode, sending items to export until there are
+-- 100 in EXPORT_STORAGE or until at or below 100 in stock (lower_lim)
+-- i.e. mode = match (stock_amt, current_mode) {
+--          (x, _), x <= lower_lim = RecipeMode;
+--          (x, _), x >= upper_lim = ExportMode;
+--          (_, curr) = curr;
+--      }
+-- in order to push the other products through the system, they will be checked
+-- and sent if enough of them accrue
+
 function createModes (items)
     local result = {}
     for item, _ in pairs(items) do