Crosscut saws generally have smaller teeth than rip saws. Crosscut saws also include smaller hand saws used in carpentry. Some sawmills also use crosscut saws to cut boards and planks to length. Crosscut saws are unable to bore cut, a technique that a chainsaw operator uses constantly. Crosscut saws require more space to operate. Crosscut saws are used with a variety of other small hand tools. On top of that, both chainsaw and crosscut saws are dangerous in their own rights. Records exist of crosscut saws in use during the Roman Empire although not widely. A kit for crosscut saw work weighs much less than a kit for chainsaw work. When working with sheetgoods, there is no distinction between crosscut and rip cut. This crosscut encountered high-grade ore and a 100-ton mill was in operation by March 1918. Similar tunnels, known as drifts, are driven along the ore veins from the crosscut. Tunnel valleys from successive glaciations may crosscut one another. The older country rock is crosscut by a younger magmatic body. Cascade Public Media currently consists of KCTS, Crosscut and Piranha Partners.