deep beneath the London clay - which is ideal ground to dig tunnels through, workmen begin to excavate a new underground railway line commonly referred to as The Tube. This is P1 of 2 of a civil engineering project with a rather dry narrative - great engineering scenes and plenty of mud and hard work as the workers manipulate the concrete liner sections. The digging stops every 15 minutes or so for the liners to be installed. it looks like a process where many hands and fingers were easily caught between the segments. Hardly any workers wore any form of personal protection with hard hats more or less unknown during the 1960's. However, there was employment for thousands of men.

please note, this is a rail related engineering film.