NEW - West Middlesex Main Drainage 1930 - 1935

These images have been kindly digitised and donated by Mr John Timms MBE

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Completed 11' diameter tunnel (number 2)

6' penstocks. Shaft number 4

Erecting cast iron segments, tunnel 2

Completed concrete lining to 11' diameter tunnel (number 2)

Excavation, tunnel 2

Looking down cylinder 4C with shield in bottom

Exterior of air lock, tunnel 2. Shaft B

Pit 3 showing timbering

Pre packed brick arch to 11' diameter (number 2 tunnel)

View looking down the caisson

Close up of manhole 12 before covering

Manhole 12 before covering

Manhole 17. Side entrance manhole completed

Shaft number 17

Manhole number 9. Side entrance before concreting

Air locks

Compressed air plant at shaft 19

Shaft 23 plant

Special shield

Heading for 2'6'' diameter pipes

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