This is the NIST report on the World Trade Center collapse.
I have done searches and listed all of the pages with the words steel, concrete, C (celsius), F (fahrenheit), tons, degrees, kip and ksi. I have already found things I consider oddly interesting.
On PDF page 117 they say the towers had "roughly 200,000 tons of steel" and mention this again on page 137. That doesn't seem a very precise specification to me. That could mean anywhere from 175,000 to 225,000. I would have thought they would want to be much more precise than that. In addition to that I can't find any mention of the weight of steel and/or concrete on the floors where the planes hit. How can you analyze the overall effect of the impact without having some idea of the distribution of mass in the building? There should be a table specifying the tons of steel and concrete on every floor. The mass and distribution of mass within the building is going to influence the effects of the impact.
But when you search on the word degree you find lots of details about orientation of the building and angles of the plane and it being banked at 25 +/- 2 degrees. And yet the word tons only appears in the report 8 times and nowhere is there a specification of the tons of concrete. They use the word concrete a great deal. See if you can find a specification of the quantity of concrete in each or both towers.
How do you accurately analyze and talk about the the effect of an airliner colliding with a steel and concrete structure without being exact about the amount and distribution of steel and concrete?