Rock excavation tools disintegrate and remove the rock from boreholes and tunnels by four basic mechanisms: thermal spalling, fusion and vaporization, mechanical stresses, and chemical reactions, as ...

A new highly-controllable plasma rock breaking method is changing the way contractors, quarry operators and mining companies perform hard-rock excavation. The Plasma Method, developed by the KAPRA ...

Caliche rock is becoming a growing concern during outdoor remodeling and excavation projects throughout desert regions ...