Home > Term: Roof (coal)
Roof (coal)
The rock immediately above a coal seam. The roof is commonly a shale, often carbonaceous and softer than rocks higher up in the roof strata.
- Μέρος του λόγου: noun
- Κλάδος/Τομέας: Ενέργεια
- Category: Άνθρακας; Φυσικό αέριο; Πετρέλαιο
- Company: EIA
0
Δημιουργός
- Harry8L
-
(V.I.P) 574128 points - 100% positive feedback
(London, United Kingdom)
