These are the people who work with pile-driving rigs. Usually the first workers at the construction site, they drive metal sheet piling to hold back dirt during excavations. They drive concrete and metal piling as part of the foundation system upon which skyscrapers are built, and they drive wood and concrete piling to hold up docks, wharves and bridges. In some cases they work on offshore oilrigs and as commercial divers involved in underwater construction. Pile drivers are also required to install heavy timbers and work with a variety of hand and portable power tools, and frequently cut, join and fasten metal construction materials using welding equipment and oxy-acetylene torches.
