AGGREGATE PRODUCTION
In-pit Crushing and Overland Conveying

Roberts & Schaefer Company (R&S) has developed aggregate production systems using their experience and understanding of the severe conditions that exist in the quarry. Continued improvements in raw material extraction and transportation have advanced the use of in-pit crushing and overland conveying.

The use of mobile crushing units close to the working face and movable conveyor systems provide efficient and versatile systems. The application of in-pit crushing, near-pit crushing, and overland conveying, significantly reduces the environmental impact caused by truck haul operations.

Our "Full Service" experience includes investigation and feasibility studies to determine the suitability of in-pit crushing and overland conveying for each specific operation.

The following projects exemplify our experience.

GRANITE ROCK COMPANY
In-pit Crushing and Conveying System
Aromas, California
Granite Rock Company selected R&S to design and engineer an in-pit mobile crusher and overland conveyors to eliminate haul trucks. For ease of maintenance, the system's major components are off-the-shelf while Krupp built the mobile crusher. In-depth project information

CALMAT
Boulevard Mine Extension Project Los Angeles, California
R&S provided engineering services for four overland conveyor belts on a time and material basis. The four conveyors totalled 8,000 linear feet of 42" wide conveyor, transporting 2,500 tph of 8" x 0" raw sand and gravel aggregate from the pit to the plant. In-depth project information

More Aggregate In-pit Crushing and
Overland Conveying Projects

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