diff --git a/mods/technic/extranodes/init.lua b/mods/technic/extranodes/init.lua
index 0d6f183..934193f 100644
--- a/mods/technic/extranodes/init.lua
+++ b/mods/technic/extranodes/init.lua
@@ -25,7 +25,7 @@ register_stair_slab_panel_micro("technic", "marble_bricks", "technic:marble_bric
 	0)
 
 register_stair_slab_panel_micro("technic", "granite", "technic:granite",
-	{cracky=3, not_in_creative_inventory=1},
+	{cracky=1, not_in_creative_inventory=1},
 	{"technic_granite.png"},
 	S("Granite"),
 	"granite",
diff --git a/mods/technic/technic/config.lua b/mods/technic/technic/config.lua
index 1dfce66..e512bee 100644
--- a/mods/technic/technic/config.lua
+++ b/mods/technic/technic/config.lua
@@ -1,7 +1,4 @@
-
-local worldpath = minetest.get_worldpath()
-
-technic.config = Settings(worldpath.."/technic.conf")
+technic.config = technic.config or Settings(minetest.get_worldpath().."/technic.conf")
 
 local conf_table = technic.config:to_table()
 
@@ -9,9 +6,6 @@ local defaults = {
 	enable_mining_drill = "true",
 	enable_mining_laser = "true",
 	enable_flashlight = "false",
-	enable_rubber_tree_generation = "true",
-	enable_marble_generation = "true",
-	enable_granite_generation = "true",
 	enable_wind_mill = "false",
 	enable_corium_griefing = "true",
 }
@@ -21,4 +15,3 @@ for k, v in pairs(defaults) do
 		technic.config:set(k, v)
 	end
 end
-
diff --git a/mods/technic/technic/depends.txt b/mods/technic/technic/depends.txt
index eec4a14..c2671c5 100644
--- a/mods/technic/technic/depends.txt
+++ b/mods/technic/technic/depends.txt
@@ -1,5 +1,6 @@
 default
 pipeworks
+technic_worldgen
 bucket?
 mesecons_mvps?
 intllib?
diff --git a/mods/technic/technic/init.lua b/mods/technic/technic/init.lua
index 2349029..fcd1cd9 100644
--- a/mods/technic/technic/init.lua
+++ b/mods/technic/technic/init.lua
@@ -2,7 +2,7 @@
 -- namespace: technic
 -- (c) 2012-2013 by RealBadAngel <mk@realbadangel.pl>
 
-technic = {}
+technic = technic or {}
 
 local load_start = os.clock()
 local modpath = minetest.get_modpath("technic")
diff --git a/mods/technic/technic/items.lua b/mods/technic/technic/items.lua
index a902947..b974b95 100644
--- a/mods/technic/technic/items.lua
+++ b/mods/technic/technic/items.lua
@@ -11,11 +11,6 @@ minetest.register_craftitem( "technic:doped_silicon_wafer", {
 	inventory_image = "technic_doped_silicon_wafer.png",
 })
 
-minetest.register_craftitem("technic:enriched_uranium", {
-	description = S("Enriched Uranium"),
-	inventory_image = "technic_enriched_uranium.png",
-})
-
 minetest.register_craftitem("technic:uranium_fuel", {
 	description = S("Uranium Fuel"),
 	inventory_image = "technic_uranium_fuel.png",
@@ -163,3 +158,37 @@ minetest.register_node("technic:machine_casing", {
 	tiles = {"technic_machine_casing.png"},
 	sounds = default.node_sound_stone_defaults(),
 })
+
+for p = 0, 35 do
+	local nici = (p ~= 0 and p ~= 7 and p ~= 35) and 1 or nil
+	local psuffix = p == 7 and "" or p
+	local ingot = "technic:uranium"..psuffix.."_ingot"
+	local block = "technic:uranium"..psuffix.."_block"
+	local ov = p == 7 and minetest.override_item or nil;
+	(ov or minetest.register_craftitem)(ingot, {
+		description = string.format(S("%.1f%%-Fissile Uranium Ingot"), p/10),
+		inventory_image = "technic_uranium_ingot.png",
+		groups = {uranium_ingot=1, not_in_creative_inventory=nici},
+	});
+	(ov or minetest.register_node)(block, {
+		description = string.format(S("%.1f%%-Fissile Uranium Block"), p/10),
+		tiles = {"technic_uranium_block.png"},
+		is_ground_content = true,
+		groups = {uranium_block=1, not_in_creative_inventory=nici, cracky=1, level=2, radioactive=math.floor(math.sqrt(p) + 0.5)},
+		sounds = default.node_sound_stone_defaults(),
+	});
+	if not ov then
+		minetest.register_craft({
+			output = block,
+			recipe = {
+				{ingot, ingot, ingot},
+				{ingot, ingot, ingot},
+				{ingot, ingot, ingot},
+			},
+		})
+		minetest.register_craft({
+			output = ingot.." 9",
+			recipe = {{block}},
+		})
+	end
+end
diff --git a/mods/technic/technic/legacy.lua b/mods/technic/technic/legacy.lua
index c835937..8360a71 100644
--- a/mods/technic/technic/legacy.lua
+++ b/mods/technic/technic/legacy.lua
@@ -29,6 +29,7 @@ technic.legacy_nodenames = {
 	["technic:generator"]        = "technic:lv_generator",
 	["technic:generator_active"] = "technic:lv_generator_active",
 	["technic:iron_dust"] = "technic:wrought_iron_dust",
+	["technic:enriched_uranium"] = "technic:uranium35_ingot",
 }
 
 for old, new in pairs(technic.legacy_nodenames) do
diff --git a/mods/technic/technic/locale/de.txt b/mods/technic/technic/locale/de.txt
index 984296b..1a1e82a 100644
--- a/mods/technic/technic/locale/de.txt
+++ b/mods/technic/technic/locale/de.txt
@@ -29,6 +29,8 @@ Graphite = Graphit
 Carbon Cloth = Kohlefasergewebe
 Raw Latex = Rohlatex
 Rubber Fiber = Gummifaser
+%.1f%%-Fissile Uranium Ingot =
+%.1f%%-Fissile Uranium Block =
 
 ## Machine misc
 Machine cannot be removed because it is not empty = Die Maschine kann nicht entfernt werden, weil sie noch nicht leer ist.
@@ -162,6 +164,7 @@ Talinite = Talinite
 Tin = Zinn
 Wrought Iron = Schmiedeeisen
 Zinc = Zink
+%.1f%%-Fissile Uranium =
 
 ## Tools
 RE Battery = Akkubatterie
diff --git a/mods/technic/technic/locale/es.txt b/mods/technic/technic/locale/es.txt
index 2323abc..9d58ebd 100644
--- a/mods/technic/technic/locale/es.txt
+++ b/mods/technic/technic/locale/es.txt
@@ -29,6 +29,8 @@ Graphite = Grafito
 Carbon Cloth = Tela de Carbon
 Raw Latex = Latex Crudo
 Rubber Fiber = Fibra de Hule
+%.1f%%-Fissile Uranium Ingot =
+%.1f%%-Fissile Uranium Block =
 
 ## Machine misc
 Machine cannot be removed because it is not empty = La maquina no puede removerse porque no esta vacia
@@ -152,6 +154,7 @@ Talinite = Talinita
 Tin = Estanio
 Wrought Iron = Hierro Forjado
 Zinc = Zinc
+%.1f%%-Fissile Uranium =
 
 ## Tools
 RE Battery =
diff --git a/mods/technic/technic/locale/it.txt b/mods/technic/technic/locale/it.txt
index 70da24e..234a858 100644
--- a/mods/technic/technic/locale/it.txt
+++ b/mods/technic/technic/locale/it.txt
@@ -26,6 +26,8 @@ Graphite = Lastra in graffite
 Carbon Cloth = Fibra di carbonio
 Raw Latex = Latex grezzo
 Rubber Fiber = Fibra di gomma
+%.1f%%-Fissile Uranium Ingot =
+%.1f%%-Fissile Uranium Block =
 
 ## Machine misc
 Machine cannot be removed because it is not empty = La macchina non può essere rimossa perchè non è vuota
@@ -159,6 +161,7 @@ Talinite = Talinite
 Tin = Stagno
 Wrought Iron = Ferro Battuto
 Zinc = Zinco
+%.1f%%-Fissile Uranium =
 
 ## Tools
 RE Battery =
diff --git a/mods/technic/technic/locale/template.txt b/mods/technic/technic/locale/template.txt
index 43090df..0d47974 100644
--- a/mods/technic/technic/locale/template.txt
+++ b/mods/technic/technic/locale/template.txt
@@ -29,6 +29,8 @@ Graphite =
 Carbon Cloth =
 Raw Latex =
 Rubber Fiber =
+%.1f%%-Fissile Uranium Ingot =
+%.1f%%-Fissile Uranium Block =
 
 ## Machine misc
 Machine cannot be removed because it is not empty =
@@ -64,6 +66,7 @@ Controlled by Mesecon Signal =
 %s Battery Box = 
 %s Cable =
 %s CNC Machine =
+%s Centrifuge =
 %s Compressor =
 %s Extractor =
 %s Forcefield Emitter =
@@ -166,6 +169,7 @@ Talinite =
 Tin =
 Wrought Iron =
 Zinc =
+%.1f%%-Fissile Uranium =
 
 ## Tools
 RE Battery =
@@ -190,3 +194,4 @@ Alloy cooking =
 Grinding =
 Compressing =
 Extracting =
+Separating =
diff --git a/mods/technic/technic/machines/HV/nuclear_reactor.lua b/mods/technic/technic/machines/HV/nuclear_reactor.lua
index e5d7a1b..c4587bb 100644
--- a/mods/technic/technic/machines/HV/nuclear_reactor.lua
+++ b/mods/technic/technic/machines/HV/nuclear_reactor.lua
@@ -493,7 +493,6 @@ local default_radiation_resistance_per_node = {
 	["technic:mineral_uranium"] = 71,
 	["technic:mineral_zinc"] = 19,
 	["technic:stainless_steel_block"] = 40,
-	["technic:uranium_block"] = 500,
 	["technic:zinc_block"] = 36,
 	["tnt:tnt"] = 11,
 	["tnt:tnt_burning"] = 11,
@@ -501,6 +500,7 @@ local default_radiation_resistance_per_node = {
 local default_radiation_resistance_per_group = {
 	concrete = 16,
 	tree = 3.4,
+	uranium_block = 500,
 	wood = 1.7,
 }
 local cache_radiation_resistance = {}
diff --git a/mods/technic/technic/machines/LV/cnc_nodes.lua b/mods/technic/technic/machines/LV/cnc_nodes.lua
index 4835e49..b250bc8 100644
--- a/mods/technic/technic/machines/LV/cnc_nodes.lua
+++ b/mods/technic/technic/machines/LV/cnc_nodes.lua
@@ -42,7 +42,7 @@ technic.cnc.register_all("default:brick",
 -- SANDSTONE
 ------------
 technic.cnc.register_all("default:sandstone",
-                {crumbly=2, cracky=2, not_in_creative_inventory=1},
+                {crumbly=2, cracky=3, not_in_creative_inventory=1},
                 {"default_sandstone.png"},
                 S("Sandstone"))
 
@@ -90,7 +90,7 @@ technic.cnc.register_all("technic:marble",
 -- Granite
 ------------
 technic.cnc.register_all("technic:granite",
-                {cracky=3, not_in_creative_inventory=1},
+                {cracky=1, not_in_creative_inventory=1},
                 {"technic_granite.png"},
                 S("Granite"))
 
diff --git a/mods/technic/technic/machines/MV/centrifuge.lua b/mods/technic/technic/machines/MV/centrifuge.lua
new file mode 100644
index 0000000..5bf24bf
--- /dev/null
+++ b/mods/technic/technic/machines/MV/centrifuge.lua
@@ -0,0 +1,16 @@
+minetest.register_craft({
+	output = "technic:mv_centrifuge",
+	recipe = {
+		{ "technic:motor",          "technic:copper_plate",   "technic:diamond_drill_head" },
+		{ "technic:copper_plate",   "technic:machine_casing", "technic:copper_plate"       },
+		{ "pipeworks:one_way_tube", "technic:mv_cable0",      "pipeworks:mese_filter"      },
+	}
+})
+
+technic.register_centrifuge({
+	tier = "MV",
+	demand = { 8000, 7000, 6000 },
+	speed = 2,
+	upgrade = 1,
+	tube = 1,
+})
diff --git a/mods/technic/technic/machines/MV/init.lua b/mods/technic/technic/machines/MV/init.lua
index 74eb631..72a98b6 100644
--- a/mods/technic/technic/machines/MV/init.lua
+++ b/mods/technic/technic/machines/MV/init.lua
@@ -20,6 +20,7 @@ dofile(path.."/electric_furnace.lua")
 dofile(path.."/grinder.lua")
 dofile(path.."/extractor.lua")
 dofile(path.."/compressor.lua")
+dofile(path.."/centrifuge.lua")
 
 dofile(path.."/tool_workshop.lua")
 
diff --git a/mods/technic/technic/machines/register/alloy_recipes.lua b/mods/technic/technic/machines/register/alloy_recipes.lua
index 3227739..6f2fc94 100644
--- a/mods/technic/technic/machines/register/alloy_recipes.lua
+++ b/mods/technic/technic/machines/register/alloy_recipes.lua
@@ -1,7 +1,10 @@
 
 local S = technic.getter
 
-technic.register_recipe_type("alloy", S("Alloy cooking"), 2)
+technic.register_recipe_type("alloy", {
+	description = S("Alloy cooking"),
+	input_size = 2,
+})
 
 function technic.register_alloy_recipe(data)
 	data.time = data.time or 6
diff --git a/mods/technic/technic/machines/register/centrifuge.lua b/mods/technic/technic/machines/register/centrifuge.lua
new file mode 100644
index 0000000..dd05977
--- /dev/null
+++ b/mods/technic/technic/machines/register/centrifuge.lua
@@ -0,0 +1,8 @@
+local S = technic.getter
+
+function technic.register_centrifuge(data)
+	data.typename = "separating"
+	data.machine_name = "centrifuge"
+	data.machine_desc = S("%s Centrifuge")
+	technic.register_base_machine(data)
+end
diff --git a/mods/technic/technic/machines/register/centrifuge_recipes.lua b/mods/technic/technic/machines/register/centrifuge_recipes.lua
new file mode 100644
index 0000000..7f252b6
--- /dev/null
+++ b/mods/technic/technic/machines/register/centrifuge_recipes.lua
@@ -0,0 +1,46 @@
+local S = technic.getter
+
+technic.register_recipe_type("separating", {
+	description = S("Separating"),
+	output_size = 2,
+})
+
+function technic.register_separating_recipe(data)
+	data.time = data.time or 10
+	technic.register_recipe("separating", data)
+end
+
+local rubber_tree_planks = minetest.get_modpath("moretrees") and "moretrees:rubber_tree_planks" or "default:wood"
+
+local recipes = {
+	{ "technic:bronze_dust 4",             "technic:copper_dust 3",       "technic:tin_dust"      },
+	{ "technic:stainless_steel_dust 4",    "technic:wrought_iron_dust 3", "technic:chromium_dust" },
+	{ "technic:brass_dust 3",              "technic:copper_dust 2",       "technic:zinc_dust"     },
+	{ "moretrees:rubber_tree_trunk_empty", rubber_tree_planks.." 4",      "technic:raw_latex"     },
+	{ "moretrees:rubber_tree_trunk",       rubber_tree_planks.." 4",      "technic:raw_latex"     },
+}
+
+-- Refining uranium via centrifuge is intended to make it a practical
+-- necessity to set up an automated cascade of centrifuges.  Once the
+-- cascade has been primed, production of one 3.5%-fissile dust requires
+-- input of five 0.7%-fissile dust and 490 centrifuge operations, and
+-- produces four 0.0%-fissile dust as a byproduct.  The busiest stage
+-- of the cascade is the one taking 0.7%-fissile dust, which performs 28
+-- of the 490 operations.  The least busy is the one taking 3.4%-fissile
+-- dust, which performs 1 of the 490 operations.
+local function uranium_dust(p)
+	return "technic:uranium"..(p == 7 and "" or p).."_dust"
+end
+for p = 1, 34 do
+	table.insert(recipes, { uranium_dust(p).." 2", uranium_dust(p-1), uranium_dust(p+1) })
+end
+
+if minetest.get_modpath("bushes_classic") then
+	for _, berry in ipairs({ "blackberry", "blueberry", "gooseberry", "raspberry", "strawberry" }) do
+		table.insert(recipes, { "bushes:"..berry.."_bush", "default:stick 20", "bushes:"..berry.." 4" })
+	end
+end
+
+for _, data in pairs(recipes) do
+	technic.register_separating_recipe({ input = { data[1] }, output = { data[2], data[3] } })
+end
diff --git a/mods/technic/technic/machines/register/compressor_recipes.lua b/mods/technic/technic/machines/register/compressor_recipes.lua
index 73282cf..4fba03b 100644
--- a/mods/technic/technic/machines/register/compressor_recipes.lua
+++ b/mods/technic/technic/machines/register/compressor_recipes.lua
@@ -1,7 +1,7 @@
 
 local S = technic.getter
 
-technic.register_recipe_type("compressing", S("Compressing"))
+technic.register_recipe_type("compressing", { description = S("Compressing") })
 
 function technic.register_compressor_recipe(data)
 	data.time = data.time or 4
@@ -15,7 +15,7 @@ local recipes = {
 	{"default:copper_ingot 5",     "technic:copper_plate"},
 	{"technic:coal_dust 4",        "technic:graphite"},
 	{"technic:carbon_cloth",       "technic:carbon_plate"},
-	{"technic:enriched_uranium 4", "technic:uranium_fuel"},
+	{"technic:uranium35_ingot 5",  "technic:uranium_fuel"},
 }
 
 for _, data in pairs(recipes) do
diff --git a/mods/technic/technic/machines/register/extractor_recipes.lua b/mods/technic/technic/machines/register/extractor_recipes.lua
index d4f8269..f752144 100644
--- a/mods/technic/technic/machines/register/extractor_recipes.lua
+++ b/mods/technic/technic/machines/register/extractor_recipes.lua
@@ -1,7 +1,7 @@
 
 local S = technic.getter
 
-technic.register_recipe_type("extracting", S("Extracting"))
+technic.register_recipe_type("extracting", { description = S("Extracting") })
 
 function technic.register_extractor_recipe(data)
 	data.time = data.time or 4
@@ -24,9 +24,6 @@ local recipes = {
 	{"technic:raw_latex",                 "technic:rubber 3"},
 	{"moretrees:rubber_tree_trunk_empty", "technic:rubber"},
 	{"moretrees:rubber_tree_trunk",       "technic:rubber"},
-	
-	-- Other
-	{"technic:uranium 5",                 "technic:enriched_uranium"},
 }
 
 for _, data in pairs(recipes) do
diff --git a/mods/technic/technic/machines/register/grinder_recipes.lua b/mods/technic/technic/machines/register/grinder_recipes.lua
index 4426f5c..6ab19e7 100644
--- a/mods/technic/technic/machines/register/grinder_recipes.lua
+++ b/mods/technic/technic/machines/register/grinder_recipes.lua
@@ -1,7 +1,7 @@
 
 local S = technic.getter
 
-technic.register_recipe_type("grinding", S("Grinding"))
+technic.register_recipe_type("grinding", { description = S("Grinding") })
 
 function technic.register_grinder_recipe(data)
 	data.time = data.time or 3
@@ -16,6 +16,7 @@ local recipes = {
 	{"default:gold_lump",       "technic:gold_dust 2"},
 	{"default:iron_lump",       "technic:wrought_iron_dust 2"},
 	{"technic:chromium_lump",   "technic:chromium_dust 2"},
+	{"technic:uranium_lump",    "technic:uranium_dust 2"},
 	{"technic:zinc_lump",       "technic:zinc_dust 2"},
 	
 	-- Other
@@ -87,6 +88,41 @@ if minetest.get_modpath("gloopores") or minetest.get_modpath("glooptest") then
 	register_dust("Talinite",        "glooptest:talinite_ingot")
 end
 
+for p = 0, 35 do
+	local nici = (p ~= 0 and p ~= 7 and p ~= 35) and 1 or nil
+	local psuffix = p == 7 and "" or p
+	local ingot = "technic:uranium"..psuffix.."_ingot"
+	local dust = "technic:uranium"..psuffix.."_dust"
+	minetest.register_craftitem(dust, {
+		description = S("%s Dust"):format(string.format(S("%.1f%%-Fissile Uranium"), p/10)),
+		inventory_image = "technic_uranium_dust.png",
+		on_place_on_ground = minetest.craftitem_place_item,
+		groups = {uranium_dust=1, not_in_creative_inventory=nici},
+	})
+	minetest.register_craft({
+		type = "cooking",
+		recipe = dust,
+		output = ingot,
+	})
+	technic.register_grinder_recipe({ input = {ingot}, output = dust })
+end
+
+local function uranium_dust(p)
+	return "technic:uranium"..(p == 7 and "" or p).."_dust"
+end
+for pa = 0, 34 do
+	for pb = pa+1, 35 do
+		local pc = (pa+pb)/2
+		if pc == math.floor(pc) then
+			minetest.register_craft({
+				type = "shapeless",
+				recipe = { uranium_dust(pa), uranium_dust(pb) },
+				output = uranium_dust(pc).." 2",
+			})
+		end
+	end
+end
+
 minetest.register_craft({
 	type = "fuel",
 	recipe = "technic:coal_dust",
diff --git a/mods/technic/technic/machines/register/init.lua b/mods/technic/technic/machines/register/init.lua
index 55c1f8b..3cf373d 100644
--- a/mods/technic/technic/machines/register/init.lua
+++ b/mods/technic/technic/machines/register/init.lua
@@ -19,6 +19,7 @@ dofile(path.."/alloy_recipes.lua")
 dofile(path.."/grinder_recipes.lua")
 dofile(path.."/extractor_recipes.lua")
 dofile(path.."/compressor_recipes.lua")
+dofile(path.."/centrifuge_recipes.lua")
 
 -- Machines
 dofile(path.."/alloy_furnace.lua")
@@ -26,4 +27,4 @@ dofile(path.."/electric_furnace.lua")
 dofile(path.."/grinder.lua")
 dofile(path.."/extractor.lua")
 dofile(path.."/compressor.lua")
-
+dofile(path.."/centrifuge.lua")
diff --git a/mods/technic/technic/machines/register/machine_base.lua b/mods/technic/technic/machines/register/machine_base.lua
index 83c8740..6972b9c 100644
--- a/mods/technic/technic/machines/register/machine_base.lua
+++ b/mods/technic/technic/machines/register/machine_base.lua
@@ -17,7 +17,7 @@ local tube = {
 
 function technic.register_base_machine(data)
 	local typename = data.typename
-	local numitems = technic.recipes[typename].numitems
+	local input_size = technic.recipes[typename].input_size
 	local machine_name = data.machine_name
 	local machine_desc = data.machine_desc
 	local tier = data.tier
@@ -35,7 +35,7 @@ function technic.register_base_machine(data)
 
 	local formspec =
 		"invsize[8,9;]"..
-		"list[current_name;src;"..(4-numitems)..",1;"..numitems..",1;]"..
+		"list[current_name;src;"..(4-input_size)..",1;"..input_size..",1;]"..
 		"list[current_name;dst;5,1;2,2;]"..
 		"list[current_player;main;0,5;8,4;]"..
 		"label[0,0;"..machine_desc:format(tier).."]"
@@ -91,10 +91,26 @@ function technic.register_base_machine(data)
 			meta:set_int("src_time", meta:get_int("src_time") + 1)
 			if meta:get_int("src_time") >= result.time / data.speed then
 				meta:set_int("src_time", 0)
-				local result_stack = ItemStack(result.output)
-				if inv:room_for_item("dst", result_stack) then
+				local output = result.output
+				if type(output) ~= "table" then output = { output } end
+				local output_stacks = {}
+				for _, o in ipairs(output) do
+					table.insert(output_stacks, ItemStack(o))
+				end
+				local room_for_output = true
+				inv:set_size("dst_tmp", inv:get_size("dst"))
+				inv:set_list("dst_tmp", inv:get_list("dst"))
+				for _, o in ipairs(output_stacks) do
+					if not inv:room_for_item("dst_tmp", o) then
+						room_for_output = false
+						break
+					end
+					inv:add_item("dst_tmp", o)
+				end
+				if room_for_output then
 					inv:set_list("src", result.new_input)
-					inv:add_item("dst", result_stack)
+					inv:set_list("dst", inv:get_list("dst_tmp"))
+				else
 				end
 			end
 		end
@@ -121,7 +137,7 @@ function technic.register_base_machine(data)
 			meta:set_int("tube_time",  0)
 			meta:set_string("formspec", formspec)
 			local inv = meta:get_inventory()
-			inv:set_size("src", numitems)
+			inv:set_size("src", input_size)
 			inv:set_size("dst", 4)
 			inv:set_size("upgrade1", 1)
 			inv:set_size("upgrade2", 1)
diff --git a/mods/technic/technic/machines/register/recipes.lua b/mods/technic/technic/machines/register/recipes.lua
index cff8ca1..28a0275 100644
--- a/mods/technic/technic/machines/register/recipes.lua
+++ b/mods/technic/technic/machines/register/recipes.lua
@@ -1,15 +1,19 @@
 
-technic.recipes = {cooking = {numitems = 1}}
-function technic.register_recipe_type(typename, desc, numitems)
-	numitems = numitems or 1
-	if unified_inventory and unified_inventory.register_craft_type then
+technic.recipes = { cooking = { input_size = 1, output_size = 1 } }
+function technic.register_recipe_type(typename, origdata)
+	local data = {}
+	for k, v in pairs(origdata) do data[k] = v end
+	data.input_size = data.input_size or 1
+	data.output_size = data.output_size or 1
+	if unified_inventory and unified_inventory.register_craft_type and data.output_size == 1 then
 		unified_inventory.register_craft_type(typename, {
-			description = desc,
-			height = numitems,
+			description = data.description,
+			height = data.input_size,
 			width = 1,
 		})
 	end
-	technic.recipes[typename] = {numitems = numitems, recipes = {}}
+	data.recipes = {}
+	technic.recipes[typename] = data
 end
 
 local function get_recipe_index(items)
@@ -26,7 +30,13 @@ local function register_recipe(typename, data)
 	for i, stack in ipairs(data.input) do
 		data.input[i] = ItemStack(stack):to_string()
 	end
-	data.output = ItemStack(data.output):to_string()
+	if type(data.output) == "table" then
+		for i, v in ipairs(data.output) do
+			data.output[i] = ItemStack(data.output[i]):to_string()
+		end
+	else
+		data.output = ItemStack(data.output):to_string()
+	end
 	
 	local recipe = {time = data.time, input = {}, output = data.output}
 	local index = get_recipe_index(data.input)
@@ -35,7 +45,7 @@ local function register_recipe(typename, data)
 	end
 	
 	technic.recipes[typename].recipes[index] = recipe
-	if unified_inventory then
+	if unified_inventory and technic.recipes[typename].output_size == 1 then
 		unified_inventory.register_craft({
 			type = typename,
 			output = data.output,
@@ -70,7 +80,6 @@ function technic.get_recipe(typename, items)
 		local new_input = {}
 		for i, stack in ipairs(items) do
 			if stack:get_count() < recipe.input[stack:get_name()] then
-				print(stack:get_name())
 				return nil
 			else
 				new_input[i] = ItemStack(stack)
diff --git a/mods/technic/technic/textures/technic_enriched_uranium.png b/mods/technic/technic/textures/technic_enriched_uranium.png
deleted file mode 100644
index 8759e65..0000000
Binary files a/mods/technic/technic/textures/technic_enriched_uranium.png and /dev/null differ
diff --git a/mods/technic/technic/textures/technic_mv_centrifuge_bottom.png b/mods/technic/technic/textures/technic_mv_centrifuge_bottom.png
new file mode 100644
index 0000000..6dcd40f
Binary files /dev/null and b/mods/technic/technic/textures/technic_mv_centrifuge_bottom.png differ
diff --git a/mods/technic/technic/textures/technic_mv_centrifuge_front.png b/mods/technic/technic/textures/technic_mv_centrifuge_front.png
new file mode 100644
index 0000000..e278a33
Binary files /dev/null and b/mods/technic/technic/textures/technic_mv_centrifuge_front.png differ
diff --git a/mods/technic/technic/textures/technic_mv_centrifuge_front_active.png b/mods/technic/technic/textures/technic_mv_centrifuge_front_active.png
new file mode 100644
index 0000000..4cef912
Binary files /dev/null and b/mods/technic/technic/textures/technic_mv_centrifuge_front_active.png differ
diff --git a/mods/technic/technic/textures/technic_mv_centrifuge_side.png b/mods/technic/technic/textures/technic_mv_centrifuge_side.png
new file mode 100644
index 0000000..eeef44a
Binary files /dev/null and b/mods/technic/technic/textures/technic_mv_centrifuge_side.png differ
diff --git a/mods/technic/technic/textures/technic_mv_centrifuge_top.png b/mods/technic/technic/textures/technic_mv_centrifuge_top.png
new file mode 100644
index 0000000..813bbf8
Binary files /dev/null and b/mods/technic/technic/textures/technic_mv_centrifuge_top.png differ
diff --git a/mods/technic/technic/textures/technic_uranium_dust.png b/mods/technic/technic/textures/technic_uranium_dust.png
new file mode 100644
index 0000000..9c211dc
Binary files /dev/null and b/mods/technic/technic/textures/technic_uranium_dust.png differ
diff --git a/mods/technic/technic/textures/technicx32/technic_uranium_dust.png b/mods/technic/technic/textures/technicx32/technic_uranium_dust.png
new file mode 100644
index 0000000..d8095c3
Binary files /dev/null and b/mods/technic/technic/textures/technicx32/technic_uranium_dust.png differ
diff --git a/mods/technic/technic_chests/copper_chest.lua b/mods/technic/technic_chests/copper_chest.lua
index 2d58379..d40284b 100644
--- a/mods/technic/technic_chests/copper_chest.lua
+++ b/mods/technic/technic_chests/copper_chest.lua
@@ -19,7 +19,7 @@ minetest.register_craft({
 minetest.register_craft({
 	output = 'technic:copper_locked_chest 1',
 	recipe = {
-		{'technic:wrought_iron_ingot'},
+		{'default:steel_ingot'},
 		{'technic:copper_chest'},
 	}
 })
diff --git a/mods/technic/technic_chests/depends.txt b/mods/technic/technic_chests/depends.txt
index 2e151fa..4d04e9d 100644
--- a/mods/technic/technic_chests/depends.txt
+++ b/mods/technic/technic_chests/depends.txt
@@ -1,6 +1,3 @@
 default
-technic
-technic_worldgen
 pipeworks
 intllib?
-
diff --git a/mods/technic/technic_chests/gold_chest.lua b/mods/technic/technic_chests/gold_chest.lua
index 386d1c7..161d8fe 100644
--- a/mods/technic/technic_chests/gold_chest.lua
+++ b/mods/technic/technic_chests/gold_chest.lua
@@ -20,7 +20,7 @@ minetest.register_craft({
 minetest.register_craft({
 	output = 'technic:gold_locked_chest',
 	recipe = {
-		{'technic:wrought_iron_ingot'},
+		{'default:steel_ingot'},
 		{'technic:gold_chest'},
 	}
 })
diff --git a/mods/technic/technic_chests/init.lua b/mods/technic/technic_chests/init.lua
index 99af8ad..5fa96ff 100644
--- a/mods/technic/technic_chests/init.lua
+++ b/mods/technic/technic_chests/init.lua
@@ -4,6 +4,7 @@
 
 modpath = minetest.get_modpath("technic_chests")
 
+technic = technic or {}
 technic.chests = {}
 
 dofile(modpath.."/common.lua")
diff --git a/mods/technic/technic_chests/iron_chest.lua b/mods/technic/technic_chests/iron_chest.lua
index aa02533..90434bb 100644
--- a/mods/technic/technic_chests/iron_chest.lua
+++ b/mods/technic/technic_chests/iron_chest.lua
@@ -1,26 +1,32 @@
+local cast_iron_ingot
+if minetest.get_modpath("technic_worldgen") then
+	cast_iron_ingot = "technic:cast_iron_ingot"
+else
+	cast_iron_ingot = "default:steel_ingot"
+end
 
 minetest.register_craft({
 	output = 'technic:iron_chest 1',
 	recipe = {
-		{'technic:cast_iron_ingot','technic:cast_iron_ingot','technic:cast_iron_ingot'},
-		{'technic:cast_iron_ingot','default:chest','technic:cast_iron_ingot'},
-		{'technic:cast_iron_ingot','technic:cast_iron_ingot','technic:cast_iron_ingot'},
+		{cast_iron_ingot,cast_iron_ingot,cast_iron_ingot},
+		{cast_iron_ingot,'default:chest',cast_iron_ingot},
+		{cast_iron_ingot,cast_iron_ingot,cast_iron_ingot},
 	}
 })
 
 minetest.register_craft({
 	output = 'technic:iron_locked_chest 1',
 	recipe = {
-		{'technic:cast_iron_ingot','technic:cast_iron_ingot','technic:cast_iron_ingot'},
-		{'technic:cast_iron_ingot','default:chest_locked','technic:cast_iron_ingot'},
-		{'technic:cast_iron_ingot','technic:cast_iron_ingot','technic:cast_iron_ingot'},
+		{cast_iron_ingot,cast_iron_ingot,cast_iron_ingot},
+		{cast_iron_ingot,'default:chest_locked',cast_iron_ingot},
+		{cast_iron_ingot,cast_iron_ingot,cast_iron_ingot},
 	}
 })
 
 minetest.register_craft({
 	output = 'technic:iron_locked_chest 1',
 	recipe = {
-		{'technic:wrought_iron_ingot'},
+		{'default:steel_ingot'},
 		{'technic:iron_chest'},
 	}
 })
diff --git a/mods/technic/technic_chests/mithril_chest.lua b/mods/technic/technic_chests/mithril_chest.lua
index 69e7f17..bd2b981 100644
--- a/mods/technic/technic_chests/mithril_chest.lua
+++ b/mods/technic/technic_chests/mithril_chest.lua
@@ -19,7 +19,7 @@ minetest.register_craft({
 minetest.register_craft({
 	output = 'technic:mithril_locked_chest 1',
 	recipe = {
-		{'technic:wrought_iron_ingot'},
+		{'default:steel_ingot'},
 		{'technic:mithril_chest'},
 	}
 })
diff --git a/mods/technic/technic_chests/register.lua b/mods/technic/technic_chests/register.lua
index 17b1a0e..0344c2c 100644
--- a/mods/technic/technic_chests/register.lua
+++ b/mods/technic/technic_chests/register.lua
@@ -49,7 +49,9 @@ end
 local function check_color_buttons(pos, meta, chest_name, fields)
 	for i = 1, 16 do
 		if fields["color_button"..i] then
-			technic.swap_node(pos, chest_name..colorid_to_postfix(i))
+			local node = minetest.get_node(pos)
+			node.name = chest_name..colorid_to_postfix(i)
+			minetest.swap_node(pos, node)
 			meta:set_string("color", i)
 			return
 		end
diff --git a/mods/technic/technic_chests/silver_chest.lua b/mods/technic/technic_chests/silver_chest.lua
index 0370488..505156a 100644
--- a/mods/technic/technic_chests/silver_chest.lua
+++ b/mods/technic/technic_chests/silver_chest.lua
@@ -19,7 +19,7 @@ minetest.register_craft({
 minetest.register_craft({
 	output = 'technic:silver_locked_chest',
 	recipe = {
-		{'technic:wrought_iron_ingot'},
+		{'default:steel_ingot'},
 		{'technic:silver_chest'},
 	}
 })
diff --git a/mods/technic/technic_worldgen/config.lua b/mods/technic/technic_worldgen/config.lua
new file mode 100644
index 0000000..4ac748c
--- /dev/null
+++ b/mods/technic/technic_worldgen/config.lua
@@ -0,0 +1,15 @@
+technic.config = technic.config or Settings(minetest.get_worldpath().."/technic.conf")
+
+local conf_table = technic.config:to_table()
+
+local defaults = {
+	enable_granite_generation = "true",
+	enable_marble_generation = "true",
+	enable_rubber_tree_generation = "true",
+}
+
+for k, v in pairs(defaults) do
+	if conf_table[k] == nil then
+		technic.config:set(k, v)
+	end
+end
diff --git a/mods/technic/technic_worldgen/crafts.lua b/mods/technic/technic_worldgen/crafts.lua
index 759d8ed..3965258 100644
--- a/mods/technic/technic_worldgen/crafts.lua
+++ b/mods/technic/technic_worldgen/crafts.lua
@@ -1,11 +1,19 @@
 
 local S = technic.worldgen.gettext
 
-minetest.register_craftitem(":technic:uranium", {
-	description = S("Uranium"),
-	inventory_image = "technic_uranium.png",
+minetest.register_craftitem(":technic:uranium_lump", {
+	description = S("Uranium Lump"),
+	inventory_image = "technic_uranium_lump.png",
 	on_place_on_ground = minetest.craftitem_place_item,
 })
+minetest.register_alias("technic:uranium", "technic:uranium_lump")
+
+minetest.register_craftitem(":technic:uranium_ingot", {
+	description = S("Uranium Ingot"),
+	inventory_image = "technic_uranium_ingot.png",
+	on_place_on_ground = minetest.craftitem_place_item,
+	groups = {uranium_ingot=1},
+})
 
 minetest.register_craftitem(":technic:chromium_lump", {
 	description = S("Chromium Lump"),
@@ -74,7 +82,7 @@ local function register_block(block, ingot)
 	})
 end
 
-register_block("technic:uranium_block", "technic:uranium")
+register_block("technic:uranium_block", "technic:uranium_ingot")
 register_block("technic:chromium_block", "technic:chromium_ingot")
 register_block("technic:zinc_block", "technic:zinc_ingot")
 register_block("technic:brass_block", "technic:brass_ingot")
@@ -94,6 +102,12 @@ minetest.register_craft({
 	output = "technic:chromium_ingot",
 })
 
+minetest.register_craft({
+	type = 'cooking',
+	recipe = "technic:uranium_lump",
+	output = "technic:uranium_ingot",
+})
+
 minetest.register_craft({
 	type = 'cooking',
 	recipe = minetest.registered_aliases["technic:wrought_iron_ingot"],
diff --git a/mods/technic/technic_worldgen/depends.txt b/mods/technic/technic_worldgen/depends.txt
index a72ad90..ac858d0 100644
--- a/mods/technic/technic_worldgen/depends.txt
+++ b/mods/technic/technic_worldgen/depends.txt
@@ -1,4 +1,3 @@
 default
-technic
 intllib?
 mg?
diff --git a/mods/technic/technic_worldgen/init.lua b/mods/technic/technic_worldgen/init.lua
index 7e80fd3..73e9fc7 100644
--- a/mods/technic/technic_worldgen/init.lua
+++ b/mods/technic/technic_worldgen/init.lua
@@ -1,5 +1,6 @@
 local modpath = minetest.get_modpath("technic_worldgen")
 
+technic = technic or {}
 technic.worldgen = {}
 if intllib then
 	technic.worldgen.gettext = intllib.Getter()
@@ -7,6 +8,7 @@ else
 	technic.worldgen.gettext = function(s) return s end
 end
 
+dofile(modpath.."/config.lua")
 dofile(modpath.."/nodes.lua")
 dofile(modpath.."/oregen.lua")
 dofile(modpath.."/crafts.lua")
diff --git a/mods/technic/technic_worldgen/locale/de.txt b/mods/technic/technic_worldgen/locale/de.txt
index 1dacb41..401c94c 100644
--- a/mods/technic/technic_worldgen/locale/de.txt
+++ b/mods/technic/technic_worldgen/locale/de.txt
@@ -3,7 +3,8 @@
 # by Xanthin
 
 ## crafts.lua
-Uranium = Uran
+Uranium Lump = Uranklumpen
+Uranium Ingot = Uranbarren
 Chromium Lump = Chromklumpen
 Chromium Ingot = Chrombarren
 Zinc Lump = Zinkklumpen
diff --git a/mods/technic/technic_worldgen/locale/template.txt b/mods/technic/technic_worldgen/locale/template.txt
index a4a6e4d..594e0ce 100644
--- a/mods/technic/technic_worldgen/locale/template.txt
+++ b/mods/technic/technic_worldgen/locale/template.txt
@@ -2,7 +2,8 @@
 # technic_worldgen translation template
 
 ###crafts.lua
-Uranium = 
+Uranium Lump = 
+Uranium Ingot = 
 Chromium Lump = 
 Chromium Ingot = 
 Zinc Lump = 
diff --git a/mods/technic/technic_worldgen/nodes.lua b/mods/technic/technic_worldgen/nodes.lua
index 29ea5fb..e4774ce 100644
--- a/mods/technic/technic_worldgen/nodes.lua
+++ b/mods/technic/technic_worldgen/nodes.lua
@@ -7,7 +7,7 @@ minetest.register_node( ":technic:mineral_uranium", {
 	is_ground_content = true,
 	groups = {cracky=3, radioactive=1},
 	sounds = default.node_sound_stone_defaults(),
-	drop = 'craft "technic:uranium" 1',
+	drop = 'craft "technic:uranium_lump" 1',
 }) 
 
 minetest.register_node( ":technic:mineral_chromium", {
@@ -32,7 +32,7 @@ minetest.register_node( ":technic:granite", {
 	description = S("Granite"),
 	tiles = { "technic_granite.png" },
 	is_ground_content = true,
-	groups = {cracky=3},
+	groups = {cracky=1},
 	sounds = default.node_sound_stone_defaults(),
 }) 
 
@@ -56,7 +56,7 @@ minetest.register_node(":technic:uranium_block", {
 	description = S("Uranium Block"),
 	tiles = { "technic_uranium_block.png" },
 	is_ground_content = true,
-	groups = {cracky=1, level=2, radioactive=3},
+	groups = {uranium_block=1, cracky=1, level=2, radioactive=3},
 	sounds = default.node_sound_stone_defaults()
 })
 
diff --git a/mods/technic/technic_worldgen/textures/technic_uranium_ingot.png b/mods/technic/technic_worldgen/textures/technic_uranium_ingot.png
new file mode 100644
index 0000000..38978f8
Binary files /dev/null and b/mods/technic/technic_worldgen/textures/technic_uranium_ingot.png differ
diff --git a/mods/technic/technic_worldgen/textures/technic_uranium.png b/mods/technic/technic_worldgen/textures/technic_uranium_lump.png
similarity index 100%
rename from mods/technic/technic_worldgen/textures/technic_uranium.png
rename to mods/technic/technic_worldgen/textures/technic_uranium_lump.png