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Airborne Occupational Hazards in Sewer Systems
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Sewer systems fall into the category "out of sight, out of mind" - they seldom excite interest. But when things go wrong with the air in the sewer system, they go very wrong. Consequences can be dramatic and devastating: sewer workers killed instantly by poisonous gas when they lift a sewer lid, or entire suburban blocks levelled by explosions. |
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