construction

 

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ETFE windows

 

Why use glass for windows? Why not use a sheet of plastic instead?

 

 

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mining

 

Is it feasible to mine hard rock without using explosives?

 

 

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house prices

 

Why can't Americans afford houses?

 

 

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shipbuilding

 

Why are US ships so expensive?

 

 

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cheaper construction

 

Housing is expensive. Could it be made at lower costs?

 

 



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