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4,911 Posts.
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22/11/07
17:40
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Oh no terryl I've been watching this thread for quite some time.
BTW does anyone know how many tonnes of ore it takes to make one tonne of usable steel. I imagine there must be some waste after processing.
How much does a standard piece of cement slab reinforcement weigh, if there is such a thing as standard, or a 10 meter steel girder weigh?
Just interested and trying to get some perspective and a handle what does 400 tonnes of ore actually means.
Cheers
BW
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