Kollongdag construction Coal layer A2 at Tunnel 12. Coal mining in an open mine (day construction). Activities in excavating the carbon layer, two traces with tipping carts in the foreground. Part of the loose-leaf photo album offered by the staff of the Boekit-ASAM coal mines on Sumatra on the separating engineer director H. Tromp on January 7, 1922.

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Size: 2500px × 1987px
Photo credit: © BTEU/RKMLGE / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: voorkeursbeeld