A coremod to save a few of these:  
<img src="https://upload.wikimedia.org/wikipedia/commons/d/da/KL_CoreMemory.jpg" width="400"/>

or rather their modern equivalent: RAM.

(Image: Konstantin Lanzet, CC BY-SA 3.0 <http://creativecommons.org/licenses/by-sa/3.0/>, via Wikimedia Commons)

For a high-level description of the improvements implemented by this mod see [here](summary.md).

### Mappings

This mod currently uses official/Mojmap names for everything, some of the history is in MCP names. If you don't know
what this means it most likely isn't relevant to you, this information is mostly for people who do not want to see names
in these mappings for legel reasons.