Picture of a black hole

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The numbers game - 50 - 5,000

Howieson, Stirling (2006) The numbers game - 50 - 5,000. Scotregen, Scottish Urban Regeneration Forum, 35. p. 12.

Full text not available in this repository. (Request a copy from the Strathclyde author)

Abstract

At the start of the 20th century we used around 50 materials to construct our buildings. These were invariably natural materials which required relatively little processing - wood, stone, slate, clay, ash, glass, flax, linseed oil, lead and steel. By the end of the 20th century we are now using over 55 000 materials, the majority of which are synthetic - plastics, solvents, vinyl's etc.