The Sky Is the Limit: Human Powered Cranes and Lifting Devices
2nd August 2015
The most common tower crane used in construction today has a lifting capacity of some 12 to 20 tonnes. For quite a few construction projects in ancient history, this type of crane would be completely inadequate.
August 3rd, 2015 at 10:52
Alas, the Alien Forebears with their tractor beams are nowhere in evidence…
August 3rd, 2015 at 10:54
Just goes to illustrate the old adage: “Anything is possible give drive, vision, and and inexhaustible supply of expendable labor.”