diff --git a/technic/radiation.lua b/technic/radiation.lua
index 8aad85c..3e38e86 100644
--- a/technic/radiation.lua
+++ b/technic/radiation.lua
@@ -171,7 +171,6 @@ local node_resistances = {
 	["technic:corium_flowing"] = 40,
 	["technic:corium_source"] = 80,
 	["technic:granite"] = 18,
-	["technic:lead_block"] = 80,
 	["technic:marble"] = 18,
 	["technic:marble_bricks"] = 18,
 	["technic:mineral_chromium"] = 19,