Minnesota Statutes Business, Social, and Charitable Organizations (Ch. 300-323A) § 306.23. Evidence of abandonment

(1) the fact that the grantee or holder has not used portions of the lots or parcels for burial purposes for more than 75 years in counties having a population over 50,000 according to the 1960 federal decennial census, and 50 years in all other counties, and during that time has not made any provision for the care of the lots beyond that provided uniformly to all lots within the cemetery, and during that time has not given to the corporation a written notice of claim or interest in the lots or parcels; or

(2) the fact that the party has, for a term of 20 years or more, not used the plot or definite parts of it and has failed to keep the lot or parts of it clear of weeds or brush.