Stock Photo - ***APRIL 23, 1963, FILE PHOTO*** The builders of the Druzhba oil pipeline in Slovakia have moved to the Havlickobrod region. They are building the first part of the pipeline II, which will run 432 km from Bratislava to Litvinov. A heavy excavator digs grooves for laying the welded pipeline. (CTK Photo/Jaroslav Sladek)

Stock Photo: ***APRIL 23, 1963, FILE PHOTO***  The builders of the Druzhba oil pipeline in Slovakia have moved to the Havlickobrod region.

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