A western US mine producing lead and zinc has undergone a major expansion on its rougher/scavenger analysing and column control processing system. The miner has chosen to use the Larox Flowsys LPP pump as part of a total project worth USD 125,000. Process parameters are lead and zinc, 30% solids with a specific gravity of 1.4. Two LPP-D25 peristaltic pumps are installed to feed Outotec type 5SL courier analysers. These pumps run at a fixed speed and continuously feed the lead/zinc to the Outotec analysers at 1.8m3/h. Four LPP65 units are also installed at this site to pump the lead/zinc scavenger/rougher tails solids to a cutter system for the LPP-D25 pumps to feed the Outotec slurry analysing system. The LPP65 pumps run by a VFD system and the flow fluctuates between 10 and 15m3/h to maintain the cutter systems set level so the LPP-D pumps can monitor the specific plant parameters through the Outotec 5SL analysers. This customer has also purchased Larox PVE control valves for column control for the scavenger units. The valves control the level of the columns to retain a high recovery yield of the product.