Show I Concrete Barge The concrete barge is experimental experiment experiment- al and subject to controversy among the experts but has performed well welland welland welland and fills a definite war need A concrete concrete concrete con con- crete barge uses two-thirds two as much steel as a cargo ship but of a lower grade and readily available The barges have been slow in building and are costly for tonnage delivered This program has recently been cur cur- tailed The same criticism applies applies' to wooden barges Both concrete j i barges and wooden barges are a avery avery very small part of the total program I |