Sorry that you have been delayed on your train between Southend and Fenchurch street.
Bombs that have lain unexploded for 60 years are highly unlikely to go bang.
Until you disturb them. As soon as they are unearthed and moved by the actions of a digger or earthmover all sorts of things can happen.......
Clocks can restart.( Apparently one of this weeks bombs did start to tick again until the fuse was rapidly dowsed in Liquified gas to freeze it)
Pins that didn`t properly release when dropped from the aircraft may suddenly retract making a bomb live
Acetone discs that prevent the firing of a bomb in a chemical fuse may dislodge and allow the thing to fire.
I am sure that it was a major pain in the butt with the delays but I`m sure you wouldn`t be too happy if a 2200lb bomb went off near the track and caused a month of delays.
You would be less chuffed if you were rolling by on a train at the time as it would appear you are suggesting that the trains should have been left to run.
The main reason you haven`t heard of one of these detonating in recent years is down to the skill and bravery of the men of the Royal Army Ordnance Corps who sit down a hole with these things to attach devices to disarm them.
Maybe you would care to help with the next one?
Ray.