Pig iron

src/resources/assets/mmm/lang/en_US.lang

@@ -13,6 +13,7 @@ tile.mmm.materials.rock.limestone.name=Limestone
 item.mmm.materials.stone.coke.name=Coke
 item.mmm.materials.stone.slag.name=Slag
 item.mmm.materials.nugget.iron.name=Iron Nugget
+item.mmm.materials.ingot.pig_iron.name=Pig Iron Ingot
 
 item.mmm.materials.ingot.copper.name=Copper Ingot
 item.mmm.materials.nugget.copper.name=Copper Nugget

src/resources/assets/mmm/models/item/materials/ingot/pig_iron.json

@@ -0,0 +1,6 @@
+{
+    "parent": "minecraft:item/generated",
+    "textures": {
+        "layer0": "mmm:items/materials/ingots/pig_iron"
+    }
+}