High contamination of mine water leads to intensive siltation of water catchments of district water drainage installations of kimberlite mines in Russia. because of which their pumping equipment periodically works in non-stationary regimes. At present. a number of known methods are used to limit the operation of pumping equipment in non-stationary modes: equipping the pump with a hand... https://www.roneverhart.com/Whirlwind-Direct-2-Direct-Box-p14308/