diff --git a/init.lua b/init.lua
index 17d16c6..dafddcf 100644
--- a/init.lua
+++ b/init.lua
@@ -27,20 +27,14 @@ end
 
 -- Single tanks
 setting("int", "steel_uses", 20, "Number of uses for a steel air tank")
-setting("int", "copper_uses", 10, "Number of uses for a copper air tank")
-setting("int", "bronze_uses", config.steel_uses + config.copper_uses, "Number of uses for a bronze air tank")
 
 -- Double tanks
 setting("bool", "enable_double", true, "Enable double tanks")
 setting("int", "steel_2_uses", config.steel_uses * 2, "Number of uses for a pair of steel air tanks")
-setting("int", "copper_2_uses", config.copper_uses * 2, "Number of uses for a pair of copper air tanks")
-setting("int", "bronze_2_uses", config.bronze_uses * 2, "Number of uses for a pair of bronze air tanks")
 
 -- Triple tanks
 setting("bool", "enable_triple", true, "Enable triple tanks")
 setting("int", "steel_3_uses", config.steel_uses * 3, "Number of uses for three steel air tanks")
-setting("int", "copper_3_uses", config.copper_uses * 3, "Number of uses for threee copper air tanks")
-setting("int", "bronze_3_uses", config.bronze_uses * 3, "Number of uses for three bronze air tanks")
 
 setting("bool", "wear_in_creative", true, "Air tanks wear out in creative mode")
 
@@ -48,8 +42,6 @@ setting("bool", "compressor_needs_fuel", true, "Compressor needs fuel")
 
 -- these may come from default or from mineclone mods
 local steel_ingot
-local copper_ingot
-local bronze_ingot
 local mese_crystal_fragment
 local get_itemslot_bg = function(x, y, w, h) return "" end
 local get_hotbar_bg = function(x, y) return "" end
@@ -57,8 +49,6 @@ local sounds
 
 if minetest.get_modpath("default") then
 	steel_ingot = "default:steel_ingot"
-	copper_ingot = "default:copper_ingot"
-	bronze_ingot = "default:bronze_ingot"
 	mese_crystal_fragment = "default:mese_crystal_fragment"
 	get_hotbar_bg = default.get_hotbar_bg
 	sounds = default.node_sound_metal_defaults()
@@ -75,9 +65,6 @@ end
 if minetest.get_modpath("mcl_sounds") then
 	sounds = mcl_sounds.node_sound_metal_defaults()
 end
-if minetest.get_modpath("mcl_copper") then
-	copper_ingot = "mcl_copper:copper_ingot"
-end
 
 local compressor_desc = S("A machine for filling air tanks with compressed air.")
 local compressor_help
@@ -96,7 +83,7 @@ end
 local cardinal_dirs = {{x=1,y=0,z=0},{x=-1,y=0,z=0},{x=0,y=1,z=0},{x=0,y=-1,z=0},{x=0,y=0,z=1},{x=0,y=0,z=-1},}
 
 -- For compressor code use later on
-local max_uses = math.max(config.steel_uses, config.copper_uses, config.bronze_uses)
+local max_uses = math.max(config.steel_uses)
 if config.enable_triple then
 	max_uses = max_uses * 3
 elseif config.enable_double then
@@ -316,19 +303,13 @@ local function register_air_tank_3(name, desc, color, uses, material)
 end
 
 register_air_tank("steel", S("Steel Air Tank"), "#d6d6d6", config.steel_uses, steel_ingot)
-register_air_tank("copper", S("Copper Air Tank"), "#cd8e54", config.copper_uses, copper_ingot)
-register_air_tank("bronze", S("Bronze Air Tank"), "#c87010", config.bronze_uses, bronze_ingot)
 
 if config.enable_double then
 	register_air_tank_2("steel", S("Double Steel Air Tanks"), "#d6d6d6", config.steel_2_uses, steel_ingot)
-	register_air_tank_2("copper", S("Double Copper Air Tanks"), "#cd8e54", config.copper_2_uses, copper_ingot)
-	register_air_tank_2("bronze", S("Double Bronze Air Tanks"), "#c87010", config.bronze_2_uses, bronze_ingot)
 end
 
 if config.enable_triple then
 	register_air_tank_3("steel", S("Triple Steel Air Tanks"), "#d6d6d6", config.steel_3_uses, steel_ingot)
-	register_air_tank_3("copper", S("Triple Copper Air Tanks"), "#cd8e54", config.copper_3_uses, copper_ingot)
-	register_air_tank_3("bronze", S("Triple Bronze Air Tanks"), "#c87010", config.bronze_3_uses, bronze_ingot)
 end
 
 ---------------------------------------------------------------------------------------------------------
diff --git a/locale/template.txt b/locale/template.txt
index 8795c13..e176567 100644
--- a/locale/template.txt
+++ b/locale/template.txt
@@ -20,12 +20,6 @@ A tank containing compressed air.=
 Air Compressor=
 #item name, a snorkel mouthpiece for breathing underwater
 Breathing Tube=
-#compressed air tank made of bronze
-Bronze Air Tank=
-#compressed air tank made of copper
-Copper Air Tank=
-Double Bronze Air Tanks=
-Double Copper Air Tanks=
 Double Steel Air Tanks=
 #for indicating that a particular type of air tank is empty
 Empty @1=
@@ -55,6 +49,4 @@ This tank can be recharged with compressed air by using it on a compressor block
 #documentation text
 This tank can be recharged with compressed air by using it on a compressor block. When fully charged this tank has @1 uses before it becomes empty.=
 
-Triple Bronze Air Tanks=
-Triple Copper Air Tanks=
 Triple Steel Air Tanks=
diff --git a/locale/translate.ru.tr b/locale/translate.ru.tr
index 1a45e9f..a92742c 100644
--- a/locale/translate.ru.tr
+++ b/locale/translate.ru.tr
@@ -21,11 +21,6 @@ Air Compressor=Воздушный компрессор
 #item name, a snorkel mouthpiece for breathing underwater
 Breathing Tube=Дыхательная трубка
 #compressed air tank made of bronze
-Bronze Air Tank=Бронзовый воздушный баллон
-#compressed air tank made of copper
-Copper Air Tank=Медный воздушный баллон
-Double Bronze Air Tanks=Двойной бронзовый воздушный баллон
-Double Copper Air Tanks=Двойной медный воздушный баллон
 Double Steel Air Tanks=Двойной стальной воздушный баллон
 #for indicating that a particular type of air tank is empty
 Empty @1=Пустой @1
@@ -55,6 +50,4 @@ This tank can be recharged with compressed air by using it on a compressor block
 #documentation text
 This tank can be recharged with compressed air by using it on a compressor block. When fully charged this tank has @1 uses before it becomes empty.=Этот баллон может быть заполнен с помощью компрессора. Полностью заполненный баллон может быть использован @1 раз.
 
-Triple Bronze Air Tanks=Тройной бронзовый баллон
-Triple Copper Air Tanks=Тройной медный баллон
 Triple Steel Air Tanks=Тройной стальной баллон
diff --git a/settingtypes.txt b/settingtypes.txt
index d973ad4..4163d5c 100644
--- a/settingtypes.txt
+++ b/settingtypes.txt
@@ -1,7 +1,5 @@
 airtanks_steel_uses (Number of uses for a steel air tank) int 30 2 1000
-airtanks_copper_uses (Number of uses for a copper air tank) int 10 2 1000
-airtanks_bronze_uses (Number of uses for a bronze air tank) int 20 2 1000
 airtanks_wear_in_creative (Air tanks wear out in creative mode) bool true
 airtanks_enable_double (Enable double tanks) bool true
 airtanks_enable_triple (Enable triple tanks) bool true
-airtanks_compressor_needs_fuel (Compressor requires fuel) bool true
\ No newline at end of file
+airtanks_compressor_needs_fuel (Compressor requires fuel) bool true