Method of mining salt using two wells connected by fluid fracturing

Claim 1

THE PROCESS OF MINING A BED SOLUBLE IN A LIQUID, SAID BED LYING IN A DENSE UNDERGROUND FORMATION AND IN A STRATUM IMMEDIATELY ABOVE A LITHOLOGIC STRATUM INSOLUBLE IN SAID LIQUID AND HAVING A CLEAR PARTING LINE INTERFACE BETWEEN SAID STRAT, COMPRISING SINKING A WELL INTO SAID LOWER STRATUM, CASING THE WELL TO A POINT IN THE SOLUBLE BED NEAR TO BUT ABOVE THE SAID PARTING LINE, APPLYING A FLUID FRACTURING PRESSURE THROUGH SAID CASING, ABOVE AND BELOW SAID INTERFACE TO FRACTURE THE SAID STRATA SUBSTANTIALLY AT THEIR PARTING LINE INTERFACE, SINKING ANOTHER WELL SUBSTANTIALLY SO THEIR PARTING LINE INTERFACE, COMMUNICATING WITH SAID FRACTURE AND PROVIDING COMMUNICATION BETWEEN SAID WELLS SUBSTANTIALLY AT SAID PARTING LINE INTERFACE, INTRODUCING A LIQUID SOLVENT THROUGH ONE OF SAID WELLS TO THE PARTING LINE INTERFACE AT ONE PLACE ALONG THE FRACTURE AND WITHDRAWING THE SOLVENT THROUGH ANOTHER OF SAID WELLS AT A POINT REMOTE FROM THE PLACE AT WHICH THE SOLVENT IS INTRODUCED MBUT WITHIN THE COMPASS OF THE FRACTURE CAUSING THE SOLVENT TO FLOW ALONG THE FRACTURE AND TO DISSOLVE SAID SOLUBLE MINERAL FORMATION SUBSTANTIALLY FROM THE BOTTOM UPWARDLY.