Explosive gases kill 74 in China
February 26, 2009

An explosion in a Chinese coal mine has killed 74 people. Coal mines, like underground valve vaults, sewers, and portions of some wastewater treatment plants, are especially dangerous because they are confined spaces in which hazardous gases tend to accumulate. It is the persistent risk of explosion or asphyxiation in these sites that makes above-ground lift stations vastly safer than their submersible alternatives. Every site -- industrial, municipal, agricultural, or commercial -- that houses hazardous and/or explosive gases like hydrogen sulfide, methane, and carbon monoxide needs toxic-gas detection equipment to help ensure the safety of the people who work there.

February 2009
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last revised February 2009