MAKE A MEME View Large Image Screw and trough.gif Screw and trough http //www osha gov/SLTC/etools/machineguarding/animations/trough html PD-USGov Animated GIF Archimedes' screw animations Animations on black background
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Keywords: Screw and trough.gif Screw and trough http //www osha gov/SLTC/etools/machineguarding/animations/trough html PD-USGov Animated GIF Archimedes' screw animations Animations on black background
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