Immagini e didascalie terza fonte, Clark University, F. Walker

Pagina 175 :

 FIGURE 1.-The Port of Bristol, with its districts and suburbs, its river mouth and stream and railway network, all closely related in industrial development and activity, comprises a distinctive coastal conurbation.

Pagina 181:

FIGURE 9.-Avonmouth works of the Imperial Smelting Corporation and subsidiaries, specialising chiefly in non-ferrous metals and chemicals. Manufacture of non-ferrous metals is one of the occupations of great antiquity in Bristol. By the beginning of the 17th century lead had been won and wrought in the city from deposits in the neighboring Mendips limestones. (Courtesy of Imperial Smelt ing Corporation.)

Pagina 182:

FIGURE 10.-Extensive works of the Imperial Smelting Corporation and subsidiaries, at Avonmouth. Local ores of lead, zinc and silver, and Cornish tin, gold and copper, formed the initial raw materials for the industry, which now derives its ores from a multitude of sources, and wins and works a multiplicity of metals. (Courtesy of Imperial Smelting Corporation.)

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Prima fonte, Cambridge University, F. Greenaway

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Testo terza fonte, Clark University, F. Walker

Pagine 180-181: Local zinc first became important during the 17th century when it was used in manufacture of brass along with Cornish copper which could be bought very cheaply at the period as a bye-product of the gold, silver and tin mining and which was easily shipped to It was during the 18th century however that manufacture of lead, brass and zinc developed most rapidly in Bristol. By the middle of the century there was a large lead-producing plant near Hotwells and in 1752 the making of lead shot was commenced in Bristol and still remains as a specialised local industry. The large scale production of zinc commenced in 1743 at Warmley , whilst Cornish copper was smelted in Bristol to supply the local brass in dustry which in the later half of the century expanded to such an extent that it was producing half the total British output of brass wire. In the 20th century production and use of brass and copper has declined though there are still a number of firms in Bristol engag...
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