The reason I don't see so many heels is because I spent the majority of my waking hours at a construction site. Having said that, I can remember back in the day when a building was nearly complete, the owner would give tours to groups of people (I always assumed that they were employees/bosses at the company). Invariably, there would be several women in high heels during tours through a building under construction. I can recall another job site I worked on where the female engineer would show up every week to check things out in 4 inch block heeled boots. That was the Barilla pasta plant, and the engineer was actually from Italy. That may have had something to do with not only her footwear, but her impeccable sense of style, despite being on a construction site. The concrete floors were in by that time. It's not like she was stepping over clods of dirt in heels.