1989 - Volume #13, Issue #5, Page #15
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On The Go Rock Crusher
Josef Willibald, a West German manufacturer, makes the on-the-go rock crusher that crushes all rocks in the top 3 in. of soil (Vol. 8, No. 4). The crusher is pto-powered and mounts on a tractor 3-pt. Stones up to 121n. in dia. are crushed by high-speed rotating hammers. The 5-ft. wide machine covers 1 to 2 acres per ho..........
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