Impregnated filters for the collection of ethanethiol and butanethiol in air

Health hazard evaluation report: HETA-83-440-1537, Papillion Creek Wastewater Treatment Plant, Omaha, Nebraska.

“…1 by 38 1 and contains the penetrations for the four bar screen conveyors and the access hatch (3' X 3') to the catwalk and Parshall Flume below. The worker who died was on the catwalk collecting a routine hourly sewage sample.…”