those look pretty good. The only thing I might change on the gas chain there is to use a long handed inserter to feed from one chem furnace making salt directly into the electrolyser with pipes inbetween.
Like in this image but perhaps with less pipes http://bobingabout.gamemod.net/Factorio ...

I made it through two partial games of Factorio before I decided it needed to be more complicated and installed most of Bob's stuff. :)

I'll throw these up here for feedback, or in case anyone else finds them useful...

Basic circuits. Can be mirrored on the other side of the output belt if ...

Another hot topic we discussed was the Factorio Mod Portal that would replace the current setup when modss are managed as forum threads
GIEV. Have you decided anything about this yet? Something like http://www.wowace.com/addons/ (world of warcraft) would be awesome for factorio.

Maybe you could ...

The tank does seem a bit short on HP, for a tank...

That said, here are the tactics I've been using to take out biter bases that are crawling with big biters and spitters.

SpeedDaemon's Guide to Tank Warfare:

First step is to have enough production of cannon shells and piercing rounds that you ...