What Are Ownership Rights To All That Is Found Beneath The Surface Of The Tract Of Land Owned Extending Downward To The Center Of The Earth?

What Are Ownership Rights To All That Is Found Beneath The Surface Of The Tract Of Land Owned Extending Downward To The Center Of The Earth? What are ownership rights to all that is found beneath the surface of the tract of land owned extending downward to the center of the Earth? Subsurface rights. Who