New research suggests that a “primitive lifting machine” was in use around 150 years prior to the appearance of cranes 2,500 years ago. This early lifting machine was capable of lifting ashlar blocks ...
It’s not uncommon for earthmovers to occasionally be tasked with lifting and placing heavy loads, such as pipe or trench boxes, on a project. Yet, each lift requires careful planning to ensure the ...
Cranes first appeared in ancient Greece over 2,500 years ago, but new research suggests a primitive lifting machine—a kind of forerunner to the crane—was in use around 150 years earlier. The ancient ...
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