One of the best documentary I have ever seen !. please make more documentary for other metals as aluminium , copper .............

Amazing how far mankind has come in learning the properties and creating stronger meatals.

Best teaching ever, thanks for the knowledge

Really the best video. I seen many videos but this one is the best

This video is the bomdiggity!! its so informative.

Well done for watching the whole video Amber... but what did you learn exactly? ;) I agree though.... bomdiggity indeed!!

thank you,we appreciate your effort to teach

Great presentation! Got right to the point!

iron come from ironor such as himitate which similar to rust

thank you the vid helped me alot

best Video out there...........

goood video....

Not Bad