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Original Text (Annotation: EPW010044 / 1330211)

' The Gay-Lussac tower at Henry Judson's Chemical Works was an essential part of producing Sulphuric acid which was used extensively in the metal industries that grew up around Deritend. Judson's were one of the first patentee's of Gay-Lussac's manufacturing method in the UK. The wooden lead lined evaporation chambers pre-existed Brunel's 1852 Duddeston Viaduct and he was required to build his arches around the existing structure as can be seen today from the iron column supported spans in Cerro's yard in Liverpool Street. Crossing from one arch to another is a smaller arch which must have allowed a pipe to pass. '