First Tunguska Meteorite Fragments Discovered

From the article: "...he has found three rocks from the Tunguska region with the telltale characteristics of meteorites. If he is right, these rocks could finally help solve once and for all what kind of object struck Earth all those years ago."

Isn't this quite a leap of faith?

Hard to tell. They might be just any old three meteorite fragments. However, if microorganisms could be found in them all dating to about 1908, then it could be meaningful.

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One hundred and five years - and in between at least thirty years of intense Soviet astronomical interest due to the "space race" and no-one ever tried seriously to find the fragments? Would have been great propaganda to have data that like - slipping a bit comrades?

I recall watching some documentaries that theorized about the Tunguska blast event and from what I can recall there are a few theories that the object was a light but moderately sized snowball like asteroid/comet that largely turned to steam and dust upon entry and explosion not leaving very little stoney or iron meteorite fragments behind.

The bits that did make it to the ground easily blended in with the highly devastated local terrain making such items nearly impossible to find given the level of tech and scientific understandings of asteroids at the time.

What was and is there could easily be walked right past and never be seen by the typical person.

What if it was not a meteorite? The area is very swampy. An earthquake was reported in the area, as well as bright flashes, like lightning.

The flashes would be seen before the sounds were heard. Piezo lightning as been observed during earthquakes due to compression of underground minerals.

What if a small earthquake agitated the swamp and caused a huge cloud of natural gas to be released, like shaking a soda bottle. Then the piezo spark from the earthquake could ignite the gas, which could be a cloud many miles long.

Could a 25 mile long cloud of natural gas/air have enough power to do this?

Like a huge fuel-air bomb?