Trenching is a form of primary breaking in which a narrow trench is excavated especially for laying pipes, cables or for installing drainage
Hydraulic excavators have largely replaced cranes with wrecking balls, enabling demolition to be carried out in a much more controlled and efficient manner.
Crushing is used for mechanical size reduction of feed material. A number of different crusher types may be used
Scaling is removal of loose material from the tunnel roof and walls to prevent accidents by falling rocks.
Hammer fitted to an excavator working directly in a bench to breaks away rock which can then be removed by truck. This is most commonly used where blasting is not allowed.
When blasted rock is too big for the feeder or crusher, secondary breaking is needed to get the boulders down to size. The type of rock dictates the effectiveness of the process, with brittle rock giving the best performance.
Productivity can only be maintained with the right support.
Demolition is more than just swinging a sledgehammer or ramming a hydraulic breaker into old concrete.
There's no margin for error in tunneling. It demands high quality in every aspect – from drilling to organization, health and safety, and environment.
The metallurgical industries can be broadly divided into primary, secondary, and miscellaneous metal production operations.