Claus Nielsen, Denmark: Decauville skip at the Athens Gasworks Museum
Claus Nielsen, Denmark: Skip and a (very) short history of narrow gauge industrial railways
Claus Nielsen, Denmark: Retorts and a top hung retort loading machine
Claus Nielsen, Denmark: Gas coolers and a nice chimney against the blue Greek sky
Claus Nielsen, Denmark: Steam engines
Claus Nielsen, Denmark: Gas cleaning building
Claus Nielsen, Denmark: Gas cleaning tubs
Claus Nielsen, Denmark: Gas tank no 3