The mill comprises of a drum made of welded steel having an inside diameter of 300 mm x 300 mm long supported on heavy duty ball bearings. An air and water tight cover is provided to close the 100 mm wide opening along the length of the drum. A reduction gear driven by a motor rotates the mill at 28 to 30 RPM. It comes supplied with twelve 19 mm diameter hardened steel balls and an automatic revolution counter. It is wired for 230 V 50 Hz.

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