Document lead and sulfur

manual.md

@@ -34,50 +34,59 @@ Note ¹: *These ores are provided by Minetest Game. See [Ores](https://wiki.mine
 
 Note ²: *These ores are provided by moreores. TODO: Add reference link*
 
+#### Chromium
+Use: stainless steel
+
+Generated below: -100m, more commonly below -200m
+
 #### Coal ¹
 Use: Fuel, alloy as carbon
 
 Burning coal is a way to generate electrical power. Coal is also used,
 usually in dust form, as an ingredient in alloying recipes, wherever
 elemental carbon is required.
 
-#### Iron ¹
-Use: multiple, mainly for alloys with carbon (coal).
-
 #### Copper ¹
 Copper is a common metal, used either on its own for its electrical
 conductivity, or as the base component of alloys.
 Although common, it is very heavily used, and most of the time it will
 be the material that most limits your activity.
 
-#### Tin ¹
-Use: batteries, bronze
+#### Diamond ¹
+Use: mainly for cutting machines
 
-Tin is a common metal but is used rarely. Its abundance is well in excess
-of its usage, so you will usually have a surplus of it.
+Diamond is a precious gemstone. It is used moderately, mainly for reasons
+connected to its extreme hardness.
 
-#### Zinc
-Use: brass
+#### Gold ¹
+Use: various
 
-Generated below: 2m, more commonly below -32m
+Generated below: -64m, more commonly below -256m
 
-Zinc only has a few uses but is a common metal.
+Gold is a precious metal. It is most notably used in electrical items due to
+its combination of good conductivity and corrosion resistance.
 
-#### Chromium
-Use: stainless steel
+#### Iron ¹
+Use: multiple, mainly for alloys with carbon (coal).
 
-Generated below: -100m, more commonly below -200m
+#### Lead
+Use: batteries, HV nuclear reactor layout
 
-#### Uranium
-Use: nuclear reactor fuel
+Generated below: 16m, more common below -128m
 
-Depth: -80m until -300m, more commonly between -100m and -200m
+#### Mese ¹
+Use: various
 
-It is a moderately common metal, useful only for reasons related to radioactivity:
-it forms the fuel for nuclear reactors, and is also one of the best radiation
-shielding materials available.
+Mese is a precious gemstone, and unlike diamond it is entirely fictional.
+It is used in small quantities, wherever some magic needs to be imparted.
 
-Keep a safety distance of a meter to avoid being harmed by radiation.
+#### Mithril ²
+Use: chests
+
+Generated below: -512m, evenly common
+
+Mithril is a fictional ore, being derived from J. R. R. Tolkien's
+Middle-Earth setting.  It is little used.
 
 #### Silver ²
 Use: conductors
@@ -86,33 +95,30 @@ Generated below: -2m, evenly common
 
 Silver is a semi-precious metal and is the best conductor of all the pure elements.
 
-#### Gold ¹
-Use: various
+#### Tin ¹
+Use: batteries, bronze
 
-Generated below: -64m, more commonly below -256m
+Tin is a common metal but is used rarely. Its abundance is well in excess
+of its usage, so you will usually have a surplus of it.
 
-Gold is a precious metal. It is most notably used in electrical items due to
-its combination of good conductivity and corrosion resistance.
+#### Uranium
+Use: nuclear reactor fuel
 
-#### Mithril ²
-Use: chests
+Depth: -80m until -300m, more commonly between -100m and -200m
 
-Generated below: -512m, evenly common
+It is a moderately common metal, useful only for reasons related to radioactivity:
+it forms the fuel for nuclear reactors, and is also one of the best radiation
+shielding materials available.
 
-Mithril is a fictional ore, being derived from J. R. R. Tolkien's
-Middle-Earth setting.  It is little used.
+Keep a safety distance of a meter to avoid being harmed by radiation.
 
-#### Mese ¹
-Use: various
+#### Zinc
+Use: brass
 
-Mese is a precious gemstone, and unlike diamond it is entirely fictional.
-It is used in small quantities, wherever some magic needs to be imparted.
+Generated below: 2m, more commonly below -32m
 
-#### Diamond ¹
-Use: mainly for cutting machines
+Zinc only has a few uses but is a common metal.
 
-Diamond is a precious gemstone. It is used moderately, mainly for reasons
-connected to its extreme hardness.
 
 ### 2.2 Rocks
 
@@ -136,6 +142,12 @@ Granite is found in dense clusters and is much harder to dig than standard
 stone. It has mainly decorative use, but also appears in a couple of
 machine recipes.
 
+#### Sulfur
+Uses: battery box
+
+Sulur is generated around some lava patches (caves).
+
+
 ### 2.3 Rubber
 Rubber is a biologically-derived material that has industrial uses due
 to its electrical resistivity and its impermeability.  In technic, it