Received a letter from Dawson geophysical company. They’re requesting to do 3-D seismic survey And geophysical exploratio . They requesting a permission through Permit . But there is no end date on the request in fact it says it survives any lease sale trade or conveyance of property described above. Can any one shed light on situation. There is no letter, check or other items sent , but this permit and return envelope. The gross acreage is 3574 acres In Howard Co., do they compensate you for this, what happens if you dont sign.