Members of the Minnesota Nurses Association will be in Mankato (Thursday) to picket outside the Mayo Clinic Mankato Hospital. The Minnesota Nurses Association says nurses have been in negotiations with Mayo on a new three-year contract since September, but management has refused to negotiate with nurse members in the room. The MNA has filed an Unfair Labor Practice charge with the National Labor Relations Board against Mayo Clinic Health System. Mayo has responded with their own charge against the Minnesota Nurses Association for allowing nurse members to participate in the process. The MNA says the picket is scheduled for noon until four-30.