Issuance of a notice of trespass or other enforcement actions will occur if an unpatented mining claim, tunnel site, mill site or land open or closed to mineral entry is:
Used for a home site, place of business, or for other purposes not reasonably incident to locatable mineral mining or milling activities
Used for the mining and sale of leasable minerals or common variety mineral materials, such as sand, gravel and stone or
Operations are conducted on land that is withdrawn from mineral entry absent a pre-existing claim.
Trespass notices or other enforcement actions are taken by the Field Office.