The HighTech Stonework of the Ancients: Unsolved ...
· Tower crane atop Mont Blanc, France. (Kristoferb/ CC BY SA ) 'Built with structural steel members and powered with massive electric motors, the majority of these cranes have a load limit of under 100 tons' writes Hancock, and 'a commission to put together a temple out of 200 ton blocks would be a most unusual and very taxing job, even for modern heavyload and crane specialists.'