Born in August 1887 in Awsworth Notts, to Henry and Sarah Lamin. Elder Sisters Catherine (Kate), Mary Esther and Sarah Anne(Annie) and Elder brother John (Jack).
Educated at Awsworth Board School, just outside Ilkeston, Derbyshire, England.
I served with honour in the 9th Battalion York & Lancaster Regiment seeing front line action in Flanders and Northern Italy from the end of 1916 to January 1920.
I don't want to be skeptical, but London, and certainly Dublin, are a long way away.
I have to wonder how reliable reports of people hearing it are.
http://en.wikipedia.org/wiki/Messines_Ridge#Detonation_of_the_mines_and_assault seems to indicate the reports are probably erroneous.
I've worked with smaller but more powerful blasts for runway demolition. I would think the overpressure would be lethal for a good distance, if the shock wave was still audible at that range. Since Harry neither lost his hearing (even temporary), nor reports on the blasts, it would indicate the perceived shock he felt was not out of order with standard artillery he experienced.