operated since

URI: https://gptkb.org/prop/operated_since
3 triples
GPTKB property
Random triples
Subject Object
gptkb:Dürrnberg_salt_mine Bronze Age
gptkb:Colintraive–Rhubodach_ferry late 19th century
gptkb:Mining_Area_of_the_Great_Copper_Mountain_in_Falun 10th century