Seaboard Air Line develops ingenious method of handling precast units for highway grade separation structures; placing of slabs requires little time.
Slabs weighing 240 tons are moved on rollers
Ry. Eng. Maintenance
Railway Engineering and Maintenance ; 25 , n 8
1929
2 pages
6 Figs.
Article (Journal)
English
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Amsterdam Port Region: 54.7 Million Tons Moved
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