Went to SON last night with Nige.
Didn't start till 8.00 due to thunderstorm.
Were going to drill some holes but found out we'd forgot the extension
cable (Mike have you got it, can't find it in garage?)
So decided to pull up the boulders still down there and clear out the
rift of debris so that when we next bang it will have a better effect.
I cleared out the aggregate, but disappointingly (or not which ever way you look at it) we have now hit clay fill, all the way across the rift.
However, there was a definate draft.
Need to go a bit deeper to find out what's happening!
Jase