MN HF3303

Requires mining operators to erect and maintain a minimum three-strand wire fence along the perimeter of abandoned mines within two years of a county mine inspector's directive, with the county mine inspector authorized to require more secure fencing such as barbed wire or mesh based on local site conditions.

Makes the fee owner responsible for erecting required fencing, barriers, or signs if the mine has been idled or abandoned and the original mining operator no longer exists; allows the county to abate the nuisance and assess costs to the fee owner if they fail to act.

Establishes exemptions from fencing requirements for properties owned by the Office of the Commissioner of Iron Range Resources and Rehabilitation, municipal parks and recreational areas, and properties used for economic development.

Requires minimum appropriate warning signs at all public access points to mining areas for exempted properties, regardless of whether full fencing is required.

Increases criminal penalties for removing, disturbing, or failing to replace required mine safety fences, guards, barriers, or signs from misdemeanor classification to potential theft charges under section 609.52.