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http://ja.wcontology.org/resource/Category:掘削機 ( describe )
- http://wcontology.org/core#narrower ( describe )
  - http://ja.wcontology.org/resource/Category:掘削技術
http://ja.wcontology.org/resource/Category:掘削船 ( describe )
- http://wcontology.org/core#narrower ( describe )
  - http://ja.wcontology.org/resource/Category:掘削技術
http://ja.wcontology.org/resource/Category:石油プラットフォーム ( describe )
- http://wcontology.org/core#narrower ( describe )
  - http://ja.wcontology.org/resource/Category:掘削技術
http://ja.wcontology.org/resource/Category:掘削技術 ( describe )
- http://www.w3.org/2002/07/owl#sameAs ( describe )
  - http://ja.dbpedia.org/resource/Category:掘削技術
  - http://en.wcontology.org/resource/Category:Drilling_technology
- http://www.w3.org/1992/02/22-rdf-syntax-ns#type ( describe )
  - http://wcontology.org/core#topicCategory
- http://wcontology.org/core#instanceOf ( describe )
  - http://ja.wcontology.org/resource/Category:分野別の技術
- http://wcontology.org/core#narrower ( describe )
  - http://ja.wcontology.org/resource/Category:地盤工学
  - http://ja.wcontology.org/resource/Category:加工
- http://www.w3.org/ns/prov#wasDerivedFrom ( describe )
  - http://ja.wikipedia.org/wiki/Category:掘削技術?oldid=62489855