Aggregate & Cement

Aggregate & Cement

cementTerraSource Global is the umbrella corporation for Jeffrey Rader Brand Feeders as well as Gundlach Crushers and Pennsylvania Crusher. These three companies have a broad range of experience in aggregate and cement plants worldwide and they have established the highest standard for design, performance and reliability with their size reduction systems and the feeders that allow them to operate at optimum levels.

Jeffrey Rader has always been recognized has a champion of design and reliability whenever vibratory feeders are required.

Applications include optimising the feed rates into crushers and their centre discharging units dramatically reduce gyratory wear rates as the infeed is presented uniformly to the crusher’s throat. Jeffrey feeders also work under large crushers to protect conveyor belts from impact and they can also be used to provide reliable feed rates of limestone to ensure consistent kiln chemistries.

Gundlach Crushers typically prepare coal and pet-coke for the kilns while Pennsylvania’s crushers operate downstream from secondary crushers and clinker coolers providing reliable and incredibly stable outputs.

Macawber Engineering pioneered the use of dense-phase pneumatic conveying when asked in 1974 to convey 3” lump coal. Successful installations with a huge range of materials around the globe now number more than 6,000 and they easily facilitate the transportation of cement, clinker, fly ash, sand, lime, coke and related fuels. If abrasive, hot, friable materials are involved, Macawber Engineering has the experience and the test facilities to prove how well your process will run. Knowing the difference between vacuum, dilute and dense-phase conveying systems and the criteria to determine their use is critically important if your project or upgrade is to be perfect. The Macawber Dome Valve offers an alternative to double butterfly assemblies and pinch valves over traditional valve technologies.

Stearns Magnetics offer a comprehensive line of tramp iron removal systems which include magnetic pulleys, chute magnets, magnetic drum separators and ‘over-the-belt’ magnets with each system either protecting downstream components like crushers, kilns and clinker coolers from damage or with some recycling processes, are reclaiming valuable materials. 

VAC-U-MAX Industrial Vacuum Cleaning Systems are considered an acceptable engineering control to support compliance with OSHA and ministry regulations. Best industrial hygiene practices recommend using HEPA Vacs to mitigate operator exposures. Explosion proof designs are specified when managing dusts that pose explosion or dust ignition hazards. VAC-U-MAX can offer vacuum cleaning systems for Class II, Division 2 environments. VAC-U-MAX designs and builds severe duty vacuums to satisfy compliance and mitigate exposure to silica dust as well as high vacuum systems to manage concrete debris. Applications include all manner of housekeeping tasks like trailer and railcar cleanup. Tools for wall, ceiling, rafter and equipment cleaning are available.

Getting large or complex pieces of handling equipment to perform exactly as designed is an absolute ‘must happen’ in the aggregate and cement industry as these components are just too large to swap out or adjust in the field.  



  • Electromechanical Vibratory Feeders
  • Impactors
  • Roll Crushers
  • Size Reduction Equipment
  • Vibratory Tube Conveyors
  • Cross-belt Separator
  • Gravimetric Feeders
  • Dome Valves
  • Diverter Valves
  • Magnetic Drums
  • Volumetric Feeders
  • Industrial Vacuum Cleaning Systems
  • Magnetic Separation Systems
  • Magnetic Lifting Systems
  • Air-powered Vacuum Cleaner
  • Dense Phase Pneumatic Conveyors
  • Over-the-belt Magnets



Our Manufacturers

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