Construction Machinery


Screen Machine Industries – Diamond Z
10685 Columbus Parkway
Etna, OH 43062


View Website

Providing innovative portable machinery and engineering solutions for the mining, construction and demolition industries

Screen Machine Industries is one of the largest manufacturers of portable jaw, impact and cone crushers, screening plants, trommels, and conveyors in North America, and is a global leader in design and innovation within the industry. Their product offering provides solutions ranging from 15-600 tons/yards per hour across a vast array of applications such as sand, gravel, concrete, asphalt, topsoil, and compost products. Their successful engineering philosophy is to incorporate reliable brand name components and industry-leading features with the highest quality manufacturing techniques.

Screen Machine Industries continues to make substantial investments in research and development. Their highly skilled engineers combined with the latest computer technology including 3D design software and printing capabilities create the most innovative products in the crushing and screening industry. Numerous U.S. Patents have been awarded as a result of their creative ambition in developing machinery that is superior to any in the industry.

Their diverse product line consists of heavy-duty, track-mounted jaw, cone and impact crushers, spyders, scalpers, trommels, and conventional screening and shredding plants. Their portable stacking conveyors complete the product lineup with sizes available to fit most every job.

In addition to Screen Machine Industries  our Diamond Z facility in southwestern Idaho offers innovative grinders and metal recycling equipment which are shipped throughout the world.  Diamond Z continues to grow and innovate as a leader in the green waste industry.

Diamond Z offers a broad range of industrial tub grinders, horizontal grinders, track grinders, & metal recycling equipment designed to suit any application. From high-volume composting needs, to disaster cleanup, to stockpile tire disposal to solid waste reduction, no grinder outperforms the Diamond Z.






John Lamprinakos

President & CEO, Screen Machine

Before joining Screen Machine in September, 2019, John spent his entire career at Worthington Industries. Beginning in sales and moving through many commercial and manufacturing/operations assignments, he served as the President of Worthington’s largest business units for 18 years: Pressure Vessels, Worthington Armstrong Venture, Engineered Cabs, and Steel Processing.

John has extensive experience managing businesses across the Americas, Europe and Asia. He has an avid interest in mentoring young leaders and establishing rich company cultures tied to good core values and strong accountability.

John and his wife, Sharon, live in Powell and have three children, Alex, Cassandra and Nick.