Lead is a metal resource added by IC² and generated as ore between layers 0 and 65, usually in groups of up to 6 blocks. It requires a stone pickaxe or better to mine.
These forms of lead are seen during ore processing:
These forms of lead are seen during metal shaping:
Lead is mostly useful in IC² for its radiation-shielding properties, and thus is a component of the Nuclear Reactor, Reactor Chamber, and Reactor Pressure Vessel blocks as well as the mostly blast-proof Reinforced Door. It is also used to craft basic Reactor Plating as well as the Containment Box for safe transport of radioactive materials.
Apart from these purposes, lead in dust form is a component of the Advanced RE-Battery.