"Wake UP!" wrote:

The yellow color implies a molten-metal
temperature of approximately 1000 oC, evidently above that which the dark-
smoke hydrocarbon fires in the Towers could produce. If aluminum (e.g.,
from the plane) had melted, it would melt and flow away from the heat
source at its melting point of about 650 oC and thus would not reach the
yellow color observed for this molten metal. Thus, molten aluminum is in
fact ruled out with high probability.

Bullcrap. Molten aluminum at about 1,100 to 1,200 F glows yellow
nicely, and if it was dribbling downward from where it was melting, you
would see much the same effect as in those photos.