During the great lease rush of 2008 some sections ended up with 2 or more major players holding large lease acreage in the same sections.  Through different negotiations one player eventually emerged as the operator for the section and a unit formed and well drilled.  Some royalty recipients may be leased and getting paid royalties by a company other than the one which ended up drilling the well. I was wondering if there is a way to determine who the large leaseholders are, if any, other than the operator?  Thanks.