Drillers are specialized machines or tools used to create holes in various materials, such as soil, rock, or metal. They are commonly employed in construction, mining, and oil extraction. The process of drilling involves rotating a drill bit to penetrate the material, allowing for the installation of structures like wells, piles, or pipelines. In addition to machines, the term "driller" can also refer to skilled workers who operate these machines. These professionals are trained to handle different types of drilling equipment and ensure safety during operations. Their expertise is crucial in industries like geotechnical engineering and petroleum engineering.