oil tank shaking

probably dont belong here but anyways
about 1-1/2 hrs ago I was welding up one of my alloy Commando oil tanks and things got a bit shakey, like real shakey,
we just had a 6.8 magnitude earthquake, my 4 level house was really shakin, still standing.
oh well back to work.

So it was you that caused it!!!

Dave
69S