A small river named Duden flows by their place and supplies it with the necessary regelialia.
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Hydrogen sulfide almost always occurs as a colorless gas, and exposure happens most often through inhalation. Although hydrogen sulfide can be detected by its rotten egg scent, odor should not be used to confirm its presence since we lose our ability to distinguish an odor after prolonged exposure, and if the concentration is high enough we won’t be able to smell hydrogen sulfide at all. According to the Agency for Toxic Substances & Disease Registry, people who work in certain industries can be exposed to higher levels of hydrogen sulfide than the general population. These industries include mining, pulp and paper mills, petroleum and natural gas drilling operations, and sewage treatment plants. Individuals have to be especially careful when working in spaces such as basements, manholes, sewers and manure pits because hydrogen sulfide is heavier than air, allowing it to travel across the ground and fill low-lying spaces.