Tin

Tin is a metal added by many mods, including RedPower 2, Thermal Expansion, IndustrialCraft 2, Forestry, Tinkers' Construct and Factorization. It is also used by GregTech.

Processing
Tin Ore can be processed in a normal Furnace or similar smelting machine, which will yield one Ingot:

It can also be processed into dust using a Macerator, Rock Crusher, Grind Stone or Pulverizer, which will yield two Dust piles, each of which can be smelted into one Ingot:

Alternatively the ore can be processed with Factorization machines, which yield two or more ingots per ore.

Tin Ingots can be crafted into blocks and nuggets:

Uses
Tin has many uses, including the making of Bronze and Brass: