A screen for sizing limestone was sitting over 100 feet in the air atop a silo. Due to the difficult access point, it needed to be replaced with a reliable screen that did not get jammed or need maintenance often. GK developed a finger deck capable of self-relieving sticky materials. The finger decks would separate the limestone better than a normal punch plate deck over a mesh screen. Due to the softness of the fines mesh, screens tended to jam up. This led GK to design the STM-SCREEN™ Two-Mass Vibratory Screen with a large finger screen deck staggered over a smaller finger screen allowing materials to wriggle free in either deck.

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