years by Sir John Aird 10 inches depth, working vertically in cast-iron was inadequately irrigated, accompanied by a marked & Co. of London, who carried out the previous works grooves built in the piers. deterioration of a considerable area of basin land. of this character, and to whom we are… … Isua Harrage ; view from east abutment, upstream. In order to remove the disadvantages affecting the mous demands for masonry, quarries had to be opened In addition to the barrage, the works carried out above province, which were very marked, the govern- by the contractors, and an extensive fleet…
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