Is slate a strong rock?

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Tags

1. #slate
2. #widely
3. #grained
4. #foliated
5. #being
6. #repetitive
7. #metamorphism
8. #rocks
9. #floors
10. #mudstone
11. #insulator
12. #through
13. #metamorphic
14. #layering
15. #arises
16. #electrical
17. #building
18. #grade
19. #considered
20. #fireproof
21. #foliation
22. #particularly
23. #finest
24. #shale
25. #roofs