The main photo shows the crushing plant at Ohio’s Colgan Limestone Products Co. housing the Jeffery hammer pulverizer, pictured on top. With an automatic feed, the Jeffery hammer pulverizer crushed material to a fineness of 40 percent to pass through a 100-mesh screen. Click to enlarge.
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In this photo, three 48 FC gyrasphere crushers with air-to-oil cooling systems, hydraulic unlock and hydraulic rotate adjustments work at Pennsylvania-based New Hope Crushed Stone and Lime Co. in November 1968. Click to enlarge.
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