Contains mods:
BuildCraft (buildcraftcore) - 6.4.13
BC Factory (buildcraftfactory) - 6.4.13
BC Energy (buildcraftenergy) - 6.4.13
BC Silicon (buildcraftsilicon) - 6.4.13
BC Builders (buildcraftbuilders) - 6.4.13
BC Transport (buildcrafttransport) - 6.4.13