Hello; Well done and comprehensive video. The engineering and manufacture of the cranes have to be extremely meticulous, as in, equipment failure can cause major disasters, not to mention human error in the operation. Thanks for including The Big Muskie dragline, which was scrapped decades ago. It was an engineering marvel, in its day. An225 Mira was developed to carry the Russian Buran (Space shuttle). The US adopted a modified 747, the Russians built the AN-225 Mirya (well, they modified an AN-124). That is why it has 2 hunches above the wing roots. Mounting points for the Buran and also for rocket boosters. The Liebherr Truck is what used to be the American comp- any WISEDA which stood for the first two letters of the inventors full name( William Seldon Davis). Baxter Springs, Kansas U.S.A, was originally where the factory was. After purchase of the co. by Liebherr, the business was re- located to Newport News, Virginia, U.S.A. Really wish the units were in different formats too! As it is now, don't most people in the world understand how heavy or long, etc. anything is, the measurements are for Americans but the viewers are from all over the world who have to calculate approximately to understandable units!