New paper at The Journal of 9/11 Studies by Prof. Graeme MacQueen

from Kevin Ryan
July 21, 2009

A new paper is available at The
Journal of 9/11 Studies
. This is from Professor Graeme MacQueen, and is
called “Did the Earth Shake Before The South Tower Hit the Ground?”
Here is the abstract:

“In the debate over the collapses of the Twin Towers on 9/11, the shaking
of the earth that accompanied these collapses has played an important role.
This shaking registered clearly on seismographs. Less clear, however, are
its causes and the times it began. The National Institute of Standards and
Technology emphasizes the role of the debris from the collapsing buildings
in producing the seismic signals. In assessing NIST’s hypothesis I focus
on the collapse of the South Tower and attempt to determine the time the collapse
began, the time the debris from the Tower struck the ground, and the temporal
relation of these events to the shaking of the earth that accompanied the
collapse. I consider both the Lamont-Doherty Earth Observatory’s seismic
evidence and the evidence provided by a less studied form of seismic instrument,
the video camera. I also draw on witness testimony. I conclude that key statements
by NIST are false. Major shaking of the earth, and corresponding seismic signals,
started well before the debris hit the ground. In fact, it seems certain that
the shaking of the earth started before visible signs of building collapse.
This evidence is incompatible with the official NIST hypothesis of the cause
of the collapse of the Towers.”

Thanks to Professor MacQueen for this interesting new work, and for his other
great papers at the Journal.

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