WTC 1&2 had the thickest central steel collums ever made. Only one steel plant worldwide could even take the job of fabricating them! That was in Japan and they were shipped over here in sections.
WTC #7 had about 75 steel support collums 25 0f which were major supports. Just no way they could have melted by fire. Even in Dresden when their multi level industrial buildings were WW2 firebombed the steel supports were still vertical standing amongst the cold ashes.
FWIW, Barring any major problems, I think MUX is worthy of a double within the next 3 months. This new cycle has just begun, imo. We should get at least 3 months out of it, $1750 here we come!