This is the website for the Wetzel county records. This will be deeds, leases, etc. The older things would have go to through the Vault indexes to find old deed book etc citations. If you go up to County Offices and go to Assessor, then to to Map Cards, if you have information on the District, Map and Parcel, you can see what the map cards say about the owners (surface owners, may also be mineral owners.) If you really have 12.5 net mineral acres, that is worth getting a lawyer. You do not want net proceeds. They take out “your share” of the costs which might make it 9% instead of 15. Read on this website.