Mesa Mike: Time to archive this one.
1) Container lid has been chewed by varmits, allowing everything inside to get wet. Pages of logbook stuck together, making it almost useless. Other contents ruined too.
2) The county will soon develop this tract of land. Remember the scene in Grapes of Wrath where the line of bulldozers pushed everything in their paths down into the dirt, including houses? That's what's going to happen here...
3) Most importantly, the radiation source has been relocated, and the control room has too. So the theme of this cache doesn't make much sense any more.