Random triples
| Subject | Object |
|---|---|
| gptkb:Falun_Mine_Company | traditional methods |
| gptkb:Zacatecas_mining_district | open-pit mining |
| gptkb:Australian_Goldfields | open-pit mining |
| gptkb:Zacatecas_mining_district | underground mining |
| gptkb:Australian_Goldfields | underground mining |