Currently MMD processes over 80 different minerals in more than 70 countries worldwide for primary, secondary or tertiary crushing operations.Subhajit Chaudhuri, VP – Sales & Projects, MMD Heavy Machinery (India) Pvt Ltd The MMD group of companies is a world leading specialist in the processing and reducing of natural and manufactured minerals using Sizer technology. Subhajit Chaudhuri, Vice President- Sales & Projects, MMD Heavy Machinery (India) Pvt Ltd explains the innovative offerings of the company.What are the trends you observe in terms of ‘Sustainable Mining’?Mining can become more sustainable by developing and integrating practices that reduce the operating costs, improve safety and reduce CO2 emissions, dust and noise pollution.In-Pit Sizing and Conveying (IPSC) systems are a cost-effective and safer alternative to discontinuous material haulage by dump trucks, reducing operating costs, improving safety, and reducing CO2 emissions, dust, and noise pollution. Employing either fully-mobile, semi-mobile or static sizer units in conjunction with conveyors, IPSC efficiently processes and transports material out of the mine.The benefits of MMD IPSC includes the excellence of achieving the throughput capacities up to and over 10,000 TPH, automated material handling, low carbon emissions and environmental impact by using all electrical power, operates in extreme weather conditions, maintenance friendly.How will green mining bring a change in the conventional mining methods?In case of semi mobile IPSC system, generally fed by a small fleet of trucks transporting material short distances from the mine face. The sizer unit reduces material in preparation for efficient conveyor haulage out of the mine. As the mining face progresses these units are relocated occasionally to minimise the truck haulage distance.For the ultimate in cost savings, environmental mining and portability, fully mobile sizer units enable the use of efficient conveyor haulage directly from the mine face. They move frequently to work directly with the excavator, whilst sizing and delivering conveyable material onto the conveyor haulage system, eliminating trucks and their associated costs, safety risks and environmental impact.MMD is one of the pioneers of IPSC technology. What makes you stand out from the competitors?Bespoke solutions! MMD has, throughout its existence, developed purpose designed mobile units to suit any mining method and material. The whole range of sizers can be incorporated into a wide range of transport options available to suit the duties and throughput required.Through the use of the well established components such as the twin shaft sizer and heavy-duty apron plate feeder, MMD Fully Mobile units deliver the reliability and robustness required for IPSC operations.Semi-mobile sizer units leverage the flexibility of truck haulage together with the efficiency of conveyor haulage. This provides the ideal efficient solution for many mining scenarios where mining flexibility is vital, such as selective mining (blending), heavily faulted seams or irregular shaped ore bodies. Semi-mobile units are constructed in easy-to-assemble modules that can be relocated closer to the mine face by the MMD Atlas Transporter. The MMD Atlas Transporter is the latest technology from MMD, enabling heavy semi-mobile structures to be relocated in a safe and controlled manner. A single transporter can serve many units and structures around the mine. A range of MMD transporters are available from 200-tonne to 750-tonne carrying capacities.What are your offerings in the area of green mining?Patented MMD Twin Shaft Mineral Sizer. Sizer technology is the latest innovation in the crushing industry providing a compact and efficient way of comminution, both in underground and open pit operations. Currently MMD processes over 80 different minerals in more than 70 countries worldwide for primary, secondary or tertiary crushing operations.The sizer tooth geometry subjects the material to bending, tension and shear forces reducing material in a quick effective 3-stage breaking action. The interlaced rotor design provides pockets for undersize material to fall freely through the machine without further degradation, minimising fines production and wear while maximising production. The deep scroll draws material along the shafts to utilise the full length and capacity of the sizer. This feature also agitates the material around the machine to deliver the optimum breaking position. Because of the sizer’s unique breaking action and MMD patented sizing technology, specific power consumption is very low.How do you see the future of green or sustainable mining?Global mining is changing rapidly: rising costs, environmental pressures and health and safety have called time on traditional truck and shovel methods. As the industry becomes increasingly aware of the need for ‘Sustainable Mining’, the ecological benefits derived from the elimination of dust and reduction of harmful greenhouse emissions caused by truck and shovel methods are self-evident. MMD’s innovative technology is at the forefront of this revolution.