Received a letter from Dawson Geophysical Company. They’re requesting to do a 3-D seismic survey and geophysical exploration. They are requesting permission through a 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 anyone shed light on the situation? There is no letter, check, or other items sent, but this permit and return envelope. The gross acreage is 3,574 acres in Howard County. Do they compensate you for this? What happens if you don’t sign?