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Published on Apr 14, 2009
"9/11 debunker" Mark Roberts gets debunked by a paper published in a peer-reviewed Chemical Physics journal.
Active Thermitic Material Discovered in Dust from the 9/11 World Trade Center Catastrophe by Niels H. Harrit, Jeffrey Farrer, Steven E. Jones, Kevin R. Ryan, Frank M. Legge, Daniel Farnsworth, Gregg Roberts, James R. Gourley and Bradley R. Larsen
The paper ends with this sentence: Based on these observations, we conclude that the red layer of the red/gray chips we have discovered in the WTC dust is active, unreacted thermitic material, incorporating nanotechnology, and is a highly energetic pyrotechnic or explosive material.