Damn..... I feel bad.
I was doing an experiment yesterday with one of the techs, but
we kept getting weird readings. Then I had to leave the lab early
to attend to some other matters. The plan was for the techie to
just try to diagnose any equipment errors while I was gone, and I
would return to do the experiments again this morning....
Guess what.... the techie not only figured out the equipment
errors, he practically a couple of experiments for me as well while
I was gone. 
His logic was 'I had to test out the equipment, so I thought
that I might as well just take a couple of readings while I was at
it'.
Oh well.... I'll just acknowledge his contribution should my
work go to publication.....
It's hard to get people with initiative these days.
I mean this is not even his work at all. I think you should keep
him on your team if that is possible
