Bituminous coal specimen from mining and quarrying industries. Bituminous coal or black coal is a relatively soft coal containing a tarlike substance
Bituminous coal specimen from mining and quarrying industries. Bituminous coal or black coal is a relatively soft coal containing a tarlike substance called bitumen.
Size: 3456px × 5184px
Photo credit: © Witthaya Khampanant / Alamy / Afripics
License: Royalty Free
Model Released: No
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