Are you making an earth battery? Or something similar. I made an earth battery after I saw a video
on youtube, he got 1.46 v I think.My recreation of the battery was 30 ft long, and consisted of 5 3/4 in pipes 4' long, and 1.5' in the ground.
on the other end 5 1'  (un-cleaned) rebar. Hooked up for more voltage got 0.284 v.
Then I thought that this effect was similar to zink and copper salt water battery.
so I hooked it up this way, and got more voltage. I orderd a 1/2 lb zinc bar got it this morning.
I am going to electro plate the rebar in zinc.

I've been working on the GIS project.  Bad news good news, and let's see how we can solve it.

The government sites are the best and SSurgo data is better organized than data mart because the shapefiles include explanation of the codes they use on the soils.  It also includes the slope data and consistencies of the soils.
The bad news is that you have to download ONE COUNTY at a time.  The files are huge and slow down my computer.  Then they are hard to read if I just post a picture because you need to see your area close up.
However, another option is... Go to esri.com   then hit products tab   click on ArcView  and you'll see an option on the page to order 60 evaluation disk.  (for education use only, not business)
(you can order another disk when the first runs out)

http://gis.esri.com/emails/av92cd/index.cfm

If you tell me your county and state, I can download it and organize the file, set up the .mxd map, add relational data like cities, roads and grids so it's easier for you to find your site,add a note what steps you need to take to find your site, how you can look at both picture and pull up the identify tool for the data of that particular place, Zip it up then send it to you. 
We'll have to use my university e-mail  because mine doesn't use high speed (the files will  be around 3 MB)
If your'e still interested let me know.

Just a thought, knowing GIS is helpful in future jobs because so many companies, engineers, military, and government are turning to the use of GIS and so few people know how to use it.

Beck

@ all

Patent # 495,582 inventor claims 3,015 watts from ground generator. Fig. 5  indicate internal circuit direction. Perhaps helpful. Cindy

@ Cindy:

Welcome!  Wow, that is something we will look into.  Do you have a link to this?  Or, I can find it.  I hope you join us in our research here.  Something new everyday it seems.

Bill

***EDIT***   I have seen this before. (I just looked it up)  It talks of adding nitric acid and salt to the soil every few days to keep it going.

@ Pirate
thankyou pirate
Take a close look at Fig. 5.  It may explain what is happening in a tpu configuration.
cindy