involves removing material to create a hole that is often deeper than ten times its diameter. The process is used to make components such as gun barrels, hydraulic cylinders and oil well drilling ...

Menomonee Falls, Wis.-based Unisig manufactures deep-hole drilling systems and precision metal-cutting systems, for complex structures required in aerospace, automotive, energy, and medical part ...

Forget digging a hole to China — now China’s the one digging the really deep holes. The Asian nation has begun drilling a more than 32,800-foot-deep hole into the Earth’s crust as part of a so-called ...

(Bloomberg) -- Chinese scientists have begun drilling a 10,000-meter (32,808 feet) hole into the Earth’s crust, as the world’s second largest economy explores new frontiers above and below the ...