Features
Here comes the sun
Solar power is the primary energy source fora California quarry caught between a rock and a hard place over changing electric rates. When increased electric rates tripled overnight in 2011, Mark Soiland, Stony Point Rock Quarry president and second-generation owner,… Keep Reading
Tier 4 cool down
As manufacturers fill equipment with OAT coolant at the factory, it’s important to note coolant type before refilling, and understand its benefits. Tier 4 diesel engine technology has changed the way many construction equipment systems run – and that includes… Keep Reading
Portable plants help company power through tough times
A Nevada company produces aggregates using a team of portable plants, sometimes working alone, sometimes in tandem. The pile at Q&D Construction’s yard in Sparks, Nev., at one time consisted of more than 100,000 tons of asphalt and concrete. That… Keep Reading
A cost saving crusher
A mobile jaw crusher investment has resulted in considerable cost savings for a pair of affiliated companies. A new jaw crusher is producing aggregate in Arizona from demolition concrete, reclaimed asphalt pavement and virgin stone brought to a yard from… Keep Reading
Southern Crush: Portable plants keep a company ahead
A Georgia company relies on portable crushing and screening equipment to stay ahead of competitors. “We travel all over Florida, Georgia and Alabama for concrete- and asphalt-rubble crushing jobs of 10,000 tons and up,” says Scott Conyers, equipment vice president… Keep Reading
Walk-around denied
An MSHA inspector arrives at your operation and asks if you’ll accompany him during an inspection. A representative of miners, if there is one, also has “walk-around rights.” Does it matter if the inspector does not provide such opportunities for… Keep Reading
Tracked vs. wheeled portable plants
Tracked? Wheeled? We take a look at which type of portable plant is the more productive. About 15 years ago I had this fantastic idea to revolutionize our industry by developing a process to crush rocks with sonic waves. As… Keep Reading
Better throughout: Solving a producer’s crusher problems
New manganese wear parts and other tweaks help solve a Wisconsin producer’s crusher problems. Haas Sons Inc. is an aggregate crushing and washing o–peration in central Wisconsin. Phil Haas and his three brothers, Steve, Darrel and Gary, run their father… Keep Reading
Testing a new screening system amid intense market pressures
Editor’s Note: This is the second part of a story that began in last month’s issue of Pit & Quarry about sand-and-gravel producer Nels Ostero Ltd. in Taylor, British Columbia, Canada. The first installment discussed Nels Ostero’s need to beef… Keep Reading
