diff --git a/src/main/java/gregtech/loaders/postload/GT_Worldgenloader.java b/src/main/java/gregtech/loaders/postload/GT_Worldgenloader.java
index 7fb8848d..2a8c4c93 100644
--- a/src/main/java/gregtech/loaders/postload/GT_Worldgenloader.java
+++ b/src/main/java/gregtech/loaders/postload/GT_Worldgenloader.java
@@ -49,16 +49,16 @@ public class GT_Worldgenloader
         new GT_Worldgen_Stone("overworld.stone.basalt.large", true, GregTech_API.sBlockStones, 8, 0, 1, 300, 192, 0, 120, null, false);
         new GT_Worldgen_Stone("overworld.stone.basalt.huge", true, GregTech_API.sBlockStones, 8, 0, 1, 400, 240, 0, 120, null, false);
 
-        new GT_Worldgen_Stone("nether.stone.marble.tiny", true, GregTech_API.sBlockStones, 0, 0, 1, 50, 48, 0, 120, null, false);
-        new GT_Worldgen_Stone("nether.stone.marble.small", true, GregTech_API.sBlockStones, 0, 0, 1, 100, 96, 0, 120, null, false);
-        new GT_Worldgen_Stone("nether.stone.marble.medium", true, GregTech_API.sBlockStones, 0, 0, 1, 200, 144, 0, 120, null, false);
-        new GT_Worldgen_Stone("nether.stone.marble.large", true, GregTech_API.sBlockStones, 0, 0, 1, 300, 192, 0, 120, null, false);
-        new GT_Worldgen_Stone("nether.stone.marble.huge", true, GregTech_API.sBlockStones, 0, 0, 1, 400, 240, 0, 120, null, false);
-        new GT_Worldgen_Stone("nether.stone.basalt.tiny", true, GregTech_API.sBlockStones, 8, 0, 1, 50, 48, 0, 120, null, false);
-        new GT_Worldgen_Stone("nether.stone.basalt.small", true, GregTech_API.sBlockStones, 8, 0, 1, 100, 96, 0, 120, null, false);
-        new GT_Worldgen_Stone("nether.stone.basalt.medium", true, GregTech_API.sBlockStones, 8, 0, 1, 200, 144, 0, 120, null, false);
-        new GT_Worldgen_Stone("nether.stone.basalt.large", true, GregTech_API.sBlockStones, 8, 0, 1, 300, 192, 0, 120, null, false);
-        new GT_Worldgen_Stone("nether.stone.basalt.huge", true, GregTech_API.sBlockStones, 8, 0, 1, 400, 240, 0, 120, null, false);
+        new GT_Worldgen_Stone("nether.stone.marble.tiny", false, GregTech_API.sBlockStones, 0, 0, 1, 50, 48, 0, 120, null, false);
+        new GT_Worldgen_Stone("nether.stone.marble.small", false, GregTech_API.sBlockStones, 0, 0, 1, 100, 96, 0, 120, null, false);
+        new GT_Worldgen_Stone("nether.stone.marble.medium", false, GregTech_API.sBlockStones, 0, 0, 1, 200, 144, 0, 120, null, false);
+        new GT_Worldgen_Stone("nether.stone.marble.large", false, GregTech_API.sBlockStones, 0, 0, 1, 300, 192, 0, 120, null, false);
+        new GT_Worldgen_Stone("nether.stone.marble.huge", false, GregTech_API.sBlockStones, 0, 0, 1, 400, 240, 0, 120, null, false);
+        new GT_Worldgen_Stone("nether.stone.basalt.tiny", false, GregTech_API.sBlockStones, 8, 0, 1, 50, 48, 0, 120, null, false);
+        new GT_Worldgen_Stone("nether.stone.basalt.small", false, GregTech_API.sBlockStones, 8, 0, 1, 100, 96, 0, 120, null, false);
+        new GT_Worldgen_Stone("nether.stone.basalt.medium", false, GregTech_API.sBlockStones, 8, 0, 1, 200, 144, 0, 120, null, false);
+        new GT_Worldgen_Stone("nether.stone.basalt.large", false, GregTech_API.sBlockStones, 8, 0, 1, 300, 192, 0, 120, null, false);
+        new GT_Worldgen_Stone("nether.stone.basalt.huge", false, GregTech_API.sBlockStones, 8, 0, 1, 400, 240, 0, 120, null, false);
 
         new GT_Worldgen_GT_Ore_SmallPieces("ore.small.copper", true, 60, 120, 32, !tPFAA, true, true, Materials.Copper);
         new GT_Worldgen_GT_Ore_SmallPieces("ore.small.tin", true, 60, 120, 32, !tPFAA, true, true, Materials.Tin);