Bridges, structural steel work, and mechanical engineering productions (1909)
Sir William Arrol and Company, Ltd · Sir William Arrol and Company, Ltd · leaf 94
.When the hard boulder clay was reached, it was foundt,» be so dense and tenacious that only slow progress^d be ]lmde 1)v p.ck ^ ^^ si; Willia]n AlT0, , 7 , d a tc>o1 which wl»te * i-ould be moved is on V^ UeVertheless grated by power; and as itot many similar instances of invention, this… … Section of Caisson with Air Locks and Working; Chamber* r_t ) \
Structural iron and steel · Division 05, iron works · Bridges · Cranes · Plant machinery · Mechanical engineering · Specifications · Division 05 - Metals
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![An illustration from Current architecture: published in connection with a joint exibition [sic] held in Boston November 1916 (1916)](https://img.insideoutlibrary.com/img/200/ia-currentarchitect1916bost-104-162.webp)
