Gentlemen, congratulations!  That was the most complete, well-filmed, and educational documentary I have ever seen.  Whether for storage drums or ANY OTHER PRODUCT, it is a documentary video to be proud of and should be shown to every Mechanical Engineering graduate.  It was easy to completely follow every stage in the process, and that is something I have never seen before.  Even the fellow who rolled the finished product together at the end was careful to align the barrels "just right".  Thank you for your effort.