MMD is the world leading specialist in the processing and reduction of natural and manufactured materials utilising sizer technology. Founded in 1978 to support he UK underground coal mining industry, MMD designed and patented the twin shaft mineral sizer, an innovative product providing a technological breakthrough in mineral reduction. The MMD twin shaft mineral sizer has progressed from a 500 series through to a 1500 series capable of handling material up to 3m3 with capacities in excess of 12,000 tonnes per hour.

The MMD sizer can be used in primary, secondary and tertiary sizing applications. The MMD sizer has the ability to process wet sticky material or hard dry rock or a combination of the two and has proven to be the ideal sizing solution for over 80 different minerals including coal, lignite, overburden, cement, ceramics, construction, diamonds, industrial minerals and precious metals.