[Digestion] An accident waiting to happen (methane+diesel fumes)?

[Zietsman, Rex]

The fact that diesel fumes happened to be there does not change the
lethality of a methane explosion. Methane mixed with air in the
explosive range will "deflagrate" (shock wave proceeds at <speed of
sound which is still fast and the expansion of the hot gas is very
violent) and cause unbelievable damage. It is one of the reasons for
promoting good ventilation around digesters.

Rex


... It is interesting how our military "intelligence" knew immediately
that methane+diesel fumes can cause a HUGE blast to kill 11 and injure
100+  ... 

Is this story below plausible? If it is then, it probably worth
discussing in this forum.

As the "accident" was witnessed by many, recorded by surveillance
cameras & broadcast on live TV almost immediately and was initially
suspected as a bomb (or an LPG tank exploding due to improper
connections?) -- no one spoke of seeing, hearing or smelling fire or
smoke that would be characteristic of diesel (or just methane+diesel
fumes) burning.