1 Subjects: “...minerals;mining;environmental sustainability;geology;engineering;Indigenous resistance...”

2 Subjects: “...hydrate mining...”

3 Subjects: “...transfer of mining technology...”

4 Subjects: “...Rhenish coal-mining area...”

5 Subjects: “...text mining...”

6 Subjects: “...industrial mining...”

7 Subjects: “...coal mining concentrated watershed...”

8 Subjects: “...mining...”

9 Subjects: “...data mining...”

10 Subjects: “...Ni mining...”

11 Subjects: “...mine reclamation...”

12 Subjects: “...data mining...”

13 Subjects: “...text mining...”

14 Subjects: “...mine soil...”

15 Subjects: “...mine soil...”

16 Subjects: “...text mining...”

17 Subjects: “...mine...”

18 Subjects: “...text mining...”

19 Subjects: “...text mining...”