Chicago : Engineering and Contracting Pub. Co. · leaf 516
the open-ings in the cribs. As about 1,000 sacks wererequired to fill each crib, it was important toascertain if many sacks were being lost inthat way at the outset of filling each crib, andthis was done by occasionally attaching a cordto a sack and dropping it into the water inplace. I f there…
Buildings
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