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2. Rockbreaker - Wikipedia

   en.wikipedia.org/wiki/Rockbreaker

   A rockbreaker is a machine designed to manipulate large rocks, including reducing large rocks into smaller rocks. They are typically used in the mining industry to remove oversize rocks that are too large or too hard to be reduced in size by a crusher.

3. Hydraulic splitter - Wikipedia

   en.wikipedia.org/wiki/Hydraulic_splitter

   A hydraulic splitter, also known as rock splitter or darda splitter, is a type of portable hydraulic tool. It is used in demolition jobs which involve breaking large blocks of concrete or rocks . Its use in geology was first popularized by volcanologist David Richardson.

4. Breaker (hydraulic) - Wikipedia

   en.wikipedia.org/wiki/Breaker_(hydraulic)

   A breaker is a powerful percussion hammer fitted to an excavator for demolishing hard (rock or concrete) structures. It is powered by an auxiliary hydraulic system from the excavator, which is fitted with a foot-operated valve for this purpose.

5. Jackhammer - Wikipedia

   en.wikipedia.org/wiki/Jackhammer

   A breaker cannot rotate its steel (which for example may be either a chisel or spike) and relies on pure percussion shock to fracture and split material without cutting, whereas a (pneumatic/hydraulic) drill both impacts and rotates, which enables a steel with a tungsten carbide tipped bit to cut into hard rock such as granite, typically to ...

6. Hydraulic hammer - Wikipedia

   en.wikipedia.org/wiki/Hydraulic_hammer

   Hydraulic hammer may refer to: Breaker (hydraulic), a powerful percussion hammer fitted to an excavator for demolishing hard structures; Hydraulic hammer, ...

7. Geologist's hammer - Wikipedia

   en.wikipedia.org/wiki/Geologist's_hammer

   A geologist's hammer, rock hammer, rock pick, geological pick, or informally geo pick is a hammer used for splitting and breaking rocks. In field geology, they are used to obtain a fresh surface of a rock to determine its composition, bedding orientation, nature, mineralogy , history, and field estimate of rock strength.

8. Family's anger as father's killer goes on the run again - AOL

   www.aol.com/familys-anger-fathers-killer-goes...

   The family of a man who was murdered in Londonderry have said they have been "failed by the justice system" after his killer went on the run from prison again. An international police hunt is ...

9. Drilling fluid - Wikipedia

   en.wikipedia.org/wiki/Drilling_fluid

   Hydraulic energy provides power to mud motor for bit rotation and for MWD (measurement while drilling) and LWD (logging while drilling) tools. Hydraulic programs base on bit nozzles sizing for available mud pump horsepower to optimize jet impact at bottom well. Limited to: Pump power; Pressure loss inside drillstring; Maximum allowable surface ...