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The State Land Inventory (previously known as the Mineral Registry within Dept. of State Lands) layer is the datasets used for DSL's management obligations for State owned subsurface or mineral interests. The State Land Inventory (Mineral Registry) layer contains a representation of property owned by the various State of Oregon agencies and tracks whether the surface and subsurface rights. It does not include information about the extent of subsurface ownership. The originating deed will need to be referenced to ascertain whether there are any reservations or exceptions that effect ownership rights.
The original information was compiled in an INFO relatable table created in WorkStation Arc/Info. This INFO table was populated with mineral rights information along with Subfsurface inforamtion, from DSL staff and numerous college interns. The idea was to use INFO relates from the minreal table back to the subsurface/surface Resource Inventory polygon coverage (Layer). While the idea was good there were many inconsistancies with the data and so in early 1997 R. Sounhein decided to simplyfiy the data.
Premier Data Services from Colorado was hired to help clean up the INFO table and then work with R. Sounhein to create a new single unique minerals/subsufrace polygon dataset. Therefore, DSL now how two simple single polygon layers that could stand on their own. For the future ( => 2017) the mineral dataset will still need to be normalized to the Frst Normal as well as reducing some of the attributes that are not needed. Currently the mineral datasets is used in an online Web Mapping Application called the State Lands Inventory.