Detail
Type Ab. - Osterfeld is a Abbau (Surface Mine).
Kr Apenrade - The Kreis for Osterfeld is Apenrade. A Kreis is a government district (similar to a U.S. county).
See Osterlügum - A See notation means the entry is dependent on another entry. In this case, Osterfeld is dependent on Osterlügum, which should be consulted for additional information.