Concrete cutting and drilling contractors create precise openings, channels and separations in concrete, reinforced concrete, masonry and other hard materials. They are commonly engaged during building alterations, refurbishment, demolition and infrastructure work, where existing structures need to be modified without removing more material than necessary. Typical services include wall and floor sawing, track or wire sawing, core drilling for circular openings, and cutting slots for services such as pipes, cables and ventilation ducts. Work may be carried out in floors, walls, ceilings, foundations, roads and structural elements, using specialist equipment selected for the material, thickness and access conditions. Contractors can help establish the position and size of cuts or holes and may use dust control, water suppression and equipment to manage debris.