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Cat 320C feeds a 1200 impactor at Sergeant Stone
Check out this Caterpillar excavator feeding limestone to the new 1200 closed-circuit impact crusher at Sergeant Stone, an aggregate-producing company in Corning, Ohio. Keep Reading
2017 Pit & Quarry Roundtable & Conference
Each year, the Pit & Quarry Roundtable brings top aggregates producers, equipment manufacturers, dealers and other industry pros together for two days of productive networking, roundtable-style discussions, golf and more. The Roundtable will move to sunny Arizona for 2017, at the DoubleTree Resort in Paradise Valley/Scottsdale on January 16th-18th — and a limited number of sponsorship opportunities (below) are now available. Sponsor the Roundtable: Sponsor Gold Package Two (2) event registrations, which Include: Club Rental 18 Holes of Golf Breakfast Lunch Cocktail Reception Appear on the cover of the Pit & Quarry Roundtable issue, plus comments in the publication Sponsorship of one (1) golf hole, plus tee box signage Sponsorship of attendee “Welcome Bags,” which include: Additional literature/promotional items (provided by sponsor) Logo on event signage Logo on full page sponsor “Thank You” ad in Pit & Quarry Logo on any/all marketing collateral promoting the Roundtable Logo on breakfast napkins Logo on cocktail reception napkins Logo on agenda Logo on question list Logo on attendee list handout (pdf file) Logo… Keep Reading
Pit & Quarry visits the LafargeHolcim Marblehead Quarry
https://youtu.be/oJNiNoXEV_8 Pit & Quarry visited the LafargeHolcim Marblehead Quarry in Marblehead, Ohio, Sept. 10. Watch to see the operation in action and learn about a unique characteristic of the quarry. Keep Reading
P&Q University Lesson 9: Washing & Classifying
Editor's Note This is an old edition — Click to read the newest edition of the Pit & Quarry University Handbook Materials engineers constantly strive to improve concrete and bituminous mixes and road bases, and clean aggregate is a vital part of that effort. Yet, aggregate producers often find it difficult to meet all the requirements for “cleanliness.” While hydraulic methods are most satisfactory for cleaning aggregate to achieve desired results, they are not always perfect. It is still necessary to accept materials on the basis of some allowable percent of deleterious matter. Photo by Zach Mentz In broadest terms, construction aggregate is washed to make it meet specifications. Specifically, however, there is more to the function of water in processing aggregate than mere washing. Among these functions are: ■ Removal of clay and silt.■ Removal of shale, coal, soft stone, roots, twigs and other trash.■ Sizing.■ Classifying or separating.■ Dewatering. Because no washing method is flawless, and because some materials may require too much time, equipment and… Keep Reading
Bucyrus-Erie bulldozer, bullgrader work in tandem
https://youtu.be/KB3GUJsIzNI In this archived video, a Bucyrus-Erie bulldozer and bullgrader are working in tandem. This video was was compiled, narrated and produced by Keith Haddock for the Historical Construction Equipment Association. Keep Reading
Cones offer fast adjustment of closed-side setting
REMco offers the PROcone series of cone crushers for secondary and tertiary crushing applications. It features a rugged cast mainframe, bronze eccentric and mainframe bushings. The crusher boasts a large feed opening that remains consistent throughout the life of the manganese, says the company. No backing is required on the PROcone wear liners, making change-out fast and efficient. Push button, hydraulic controls are designed to provide easy and fast adjustment of the closed-side setting. Hydraulic tramp iron relief protects the crusher from damage owing to the passage of uncrushables through the machine. Multiple liner configurations and several eccentric throws allow the machine to be matched to the crushing application to maximize wear liner and production performance. www.remcoprocone.com Keep Reading
Bucyrus-Erie “Doubler” electric shovel
https://youtu.be/A6FjERWl5FI The Bucyrus-Erie "Doubler" electric shovel doubled the dipper capacity of a standard shovel. The 150-B in this video featured a 13-cu.-yd. dipper when equipped with the Doubler. However, the Doubler never surpassed the prototype stage and was not considered a success because of its complicated bucket linkage system and high maintenance requirements. This video was was compiled, narrated and produced by Keith Haddock for the Historical Construction Equipment Association. Keep Reading
Fifth-generation features larger breaker capability
Breaker Technology Inc.’s maintenance-friendly NT-E Series Rockbreaker System features robust connections, compact pedestal mounting and common cylinders. Its increased strength and optimized hydraulics allow the NT line to support a broader range of breakers, from 800 ft.-lb. class to 3,000 ft.-lb. class (BX8 to BX30) throughout the NT12 to NT24 offerings. The compact pedestal design allows for mounting to competitors’ bolt patterns without the need of an adaptor plate. Dual joysticks operate a fully proportional, load-sensing directional control valve, providing precise control of all boom functions. The basic system can be modified to suit many needs, including radio control pendants for maintenance and long-distance applications. www.rockbreaker.com Keep Reading
Impact crusher designed for versatility in the field
McLanahan’s Next Generation Secondary (NGS) impact crusher is designed to reduce downtime for adjustments, require fewer wear parts to inventory, and be modified in the field to accommodate changes in application and product requirements. It features a hydraulic-shim adjustment on each impact curtain for simplified operation. An optional third curtain can be installed in the field, and allows for further reduction. Other design features include interchangeable liners, extra-large inspection doors, various shaft devices, and a single hydraulic power unit. The disc type rotor is equipped with an S-shaped hammer for maximum sustained productivity. The NGS line of impactors has optional adjust-on-the-fly capabilities with a complete automation package, and is available in seven model sizes. www.mclanahan.com Keep Reading
