A biofilm forms on the interior surface of concrete as seawater penetrates the concrete of a road tunnel. A study by researchers at Chalmers University of Technology (located in Sweden) points to the ...
16hon MSN
Ignored warnings? ATC Guild had cautioned of system lag ahead of Delhi air traffic control failure
CHENNAI: The Air Traffic Controllers’ Guild of India (ATC Guild) had cautioned aviation authorities months ago about ...
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