1. In 1970, operations were changed to a system that combines solution mining and solar evaporation. 2. This is done by the process of solution mining . 3. The wet technique known as solution mining is used to access potash at greater depths. 4. Salt is extracted from underground beds either by mining or by solution mining using water to dissolve the salt. 5. In solution mining the salt reaches the surface as brine, from which the water is evaporated leaving salt crystals. 6. The underground mine was flooded in 1987 and was reactivated for commercial production as a solution mine in 1989. 7. Solution mining would move progressively from north to south, with remediation following mining as each orebody is mined out.8. Class III wells are used for the injection of fluids used in mineral solution mining beneath underground sources of drinking water. 9. This is also called the N . Y . Oil, Gas, and Solution Mining Law, which includes permitting, fees, and related laws. 10. Solar evaporation has both a shorter set up time as well as a lower capital expenditure cost, than conventional and solution mining .
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