Disambiguation evidence for Upper Silesian mining district via surface form

"Upper Silesian coal basin"

Triples (2)

Triples where some other subject referred to this entity as "Upper Silesian coal basin".

Königshütte, Silesia, German Empire → geographicArea →
"Upper Silesian coal basin"
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Hlubina coal mine → region →
"Upper Silesian coal basin"
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