imo there are many many examples of evidence dis-prooving the official version of 9/11 put forth by the govt--but unfortunately many people refuse to acknowledge the many credible testimonies of eye witnesses,or the video demonstrating an implosion and verticle drop at free fall--it amazes me but some will even go as far as denying the absolutely ludicrous explanations concerning bldg 7 --people who cannot come face to face with these realities wont even consider the shiny red flags that consist of all the circumstantial evidence like bin laden passing up the chance to strike indian point not once but twice or silversteins horrible business decisions prior to 9/11 that could only make sense if he knew they would be targeted again--norad standing down,molten steel in the basements of 1,2 and 7 and i could go on and on but the point im making is that all this stuff can be covered-up,whitewashed or whatever term you want to use but the fact is the govt can spin propaganda well enough to keep the masses from investigating whole heartedly sufficiently suppressing their lies up to a point--but there is something that cannot be disputed and completely eviscerates the government version and that piece of evidence is known as the "MURRAY STREET ENGINE" that was documented on 9/11 in many ways--it did not shred to confetti and it did not vaporize and several clear images were taken of the engine in question--but one stands out as the definitve image as a clever investigator had placed a carpenters square on the engine for reference and it is this image that tells the truth about the official version and that truth is that it is a big stinking lie---remember the rotor fan on a 767 is 9 ft in diameter--there is no way that the engine pictured came from a 767!!!! the serial numbers from the many time change parts on this engine could end the debate for sure but the where abouts of this engine or the results of its investigation are unknown
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Somebody has placed a carpenter's square in the opening so the size is that of a CFM56. This is the definitive photo of the street engine.

In the Rense article, Is Popular Mechanics Hiding 911 NYC Engine In Street Photo?,
the street engine was identified as a CFM56, the sole powerplant of the Boeing 737 after the 737-200 series. HOWEVER, UA175 that was alleged to have crashed into the South Tower was a Boeing 767-200.

In this screen capture from the CNN video of the South Tower crash the engine (circled) is seen as it heads for the intersection of Church and Murray. A flame can be seen following the descending engine.

Another engine part lying in the NYC street from the Naudet documentary: