I am sorry but a few thimblefuls in an area the size of a four bedroom house won't do it.
Pace, that's rather a bold, but unqualified, statement. Prove it. Please.
As a pilot I am interested in what density of ash can bring my aircraft down.
Yet, so far, nobody knows. What are you going to do? Keep flying
until you do have an IFSD due to ash then report back to us? How many passengers lives are you going to risk while you do this?