One customer, operating a hard rock nickel mine in Ontario, needed an efficient and reliable solution to transport its mine slime from an underground sump back to the surface while ensuring continuity in production and minimizing downtime.

Alliance Resource Partners, L.P. faced a two-pronged water challenge at one of its many underground mines. At the South Mine of the company’s Gibson County Coal in Indiana, solid-laden water needed to be pumped out of the mine, and a dewatering system needed to be installed in an area with limited space. Multiple pumps had to fit into a mine void less than eight feet high with a narrow, 20-foot entry span.

Stockholm’s largest pump station is situated some meters below a site which was once a 17th century palace in the middle of the city. The large flows and central location demanded reliable pumps.

The 4220 mixer comes in 1.5-, 2-, 3-, and 4-horsepower models. A four-horsepower mixer can operate at any lower power level and perform with the same high efficiency as a lower power model.

A deep-tunnel pumping system for Columbus, Ohio’s OARS project uses adjustable-speed Flygt pumps to manage extreme head variations and efficiently dewater a 215-foot-deep, high-capacity sewer tunnel after major flow events.