Magnetite has been important in understanding the conditions under which rocks form. Magnetite reacts with oxygen to produce hematite, and the mineral pair forms a buffer that can control oxygen fugacity. Commonly, igneous rocks contain solid solutions of both titanomagnetite and hemoilmenite or titanohematite.
Definition of relief well. : a vertical drain used for the drainage of a deep pervious stratum to relieve waterlogging of the surface soil.
If you know the rate at which water comes into your well (the recovery rate) then you can put a dole valve into the drop pipe. This will limit the amount of water that the pump is able to push out. Choose a dole valve that is the same as the recovery rate of the well and the water level in the well case wont drop.