Three staff in Japan died Friday after shedding consciousness whereas repairing sewer pipes down a manhole within the metropolis of Oga, Akita Prefecture.
The incident occurred round 9:30am. First, one employee collapsed, then two coworkers collapsed whereas making an attempt to rescue him, reviews The Japan Occasions.
An analogous incident occurred final month in Kolkata, India.
Sewer gases can embrace extremely poisonous hydrogen sulphide and ammonia.
The lads had been working underground since early that morning on a sewer-pipe substitute venture, native authorities mentioned.
One other coworker discovered them unconscious shortly after.
Police mentioned the boys, aged 29, 44 and 62, have been taken to hospital however have been later confirmed useless.
Police closed a close-by street as a precaution. They’re investigating the incident, and have warned close by residents to train warning.
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