World's largest tunnel for bay bridge
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R.H.O.
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Article
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1935
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Elsevier Science
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English
⚖ 77 KB
for a small fraction of this time, required for plant modifications. From numerous tests average efficiencies of removal were sulphur oxides 97 to 99 per cent., nitrogen oxides 60 to 70 per cent., hydrochloric acid 90 to 93 per cent., grit and dust from P.F. boiler 97 to 98 per cent., dust from P.F