Contract No. 85, Manufacture and Delivery of Precast Concrete Steel Cylinder Pipe, Southborough, Framingham, Wayland, Natick, Weston, cracks in 7 foot pipe section developed under 375 lbs./sq. in. pressure, picture taken after test was finished, looking east, Natick, Mass., Aug. 11, 1939

Contract No. 85, Manufacture and Delivery of Precast Concrete Steel Cylinder Pipe, Southborough, Framingham, Wayland, Natick, Weston, cracks in 7 foot pipe section developed under 375 lbs./sq. in. pressure, picture taken after test was finished, looking east, Natick, Mass., Aug. 11, 1939

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