Table 1.

A short list of occupational settings and other sources of hydrogen sulfide.

Petrochemical refineries of crude oils with sulfur	Livestock farmers
Natural gas plants	Sewerage plants and sewer workers
Coke production from coal with sulfur	Animal manure disposal
Kraft wood pulp production	Pipeline maintenance
Tanneries	Food processing factories
Sulfur production	Production of deuterated water
Hydrogen sulfide gas production and storage	Construction industry (e.g., manhole workers, asphalt use and storage)
Viscose Rayon production	Carbon disulfide production
Hydraulic fracking	Mixing household chemicals for suicide
Gypsum drywall	Carbonyl sulfide by in vivo metabolism

Note: Partially modified from Ref. 9.