Leslie E. Robertson, Director of Design & Construction, LERA Consulting Structural Engineers, revisited the construction of the WTC’s twin towers.
![](https://skyscraper.org/wordpress/wp-content/uploads/2019/12/WTC-under-construction-250x375.jpg)
Leslie E. Robertson, Director of Design & Construction, LERA Consulting Structural Engineers, revisited the construction of the WTC’s twin towers.