St. Paul's sand rock sewers: Fid-Bau Portal

St. Paul's sand rock sewers

Harrold, C.H.

Illustrates and describes construction details of tunnels and drop shafts cut out of sand rock thirty feet or more below the street surface. (1000 w.) (No. 33485)

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St. Paul's sand rock sewers

Harrold, C.H.

Abstract

Illustrates and describes construction details of tunnels and drop shafts cut out of sand rock thirty feet or more below the street surface. (1000 w.) (No. 33485)

St. Paul's sand rock sewers

Harrold, C.H.

Abstract

Illustrates and describes construction details of tunnels and drop shafts cut out of sand rock thirty feet or more below the street surface. (1000 w.) (No. 33485)