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.
- ส่วนหนึ่งของคำพูด: noun
- อุตสาหกรรม/ขอบเขต: Energy
- Category: Coal; Natural gas; Petrol
- Company: EIA
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- Harry8L
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