Asphyxiant gas can smell the odorants, and assigning a different smell to each gas may be impractical. Another difficulty is that most odorants (e.g., the thiols) are chemically reactive. This is not a problem with natural gas intended to be burned as fuel, which is routinely odorized, but a major use of asphyxiants such as nitrogen, helium, argon and krypton is to protect reactive materials from the atmosphere. The dangers of excess concentrations of nontoxic gases has been recognized for centuries within the mining industry. The concept of black damp (or "stythe") reflects an understanding that certain gaseous mixtures could lead to
Atmosphere (Eloy Fritsch album) Atmosphere (Eloy Fritsch album) Atmosphere: Electronic Suite is an album by Eloy Fritsch, a keyboard player known for his work in the progressive rock group Apocalypse. As a solo artist he creates cosmic electronic music. The closest comparison would be probably Vangelis, if considering his early work, which included many analogue instruments. Nevertheless, Fritsch has found his own style within melodic Electronic music framework. The opus reveals once again Fritsch’s ecological convictions: he presently defends the virtues of the gas envelope that allow everyone to live on Earth: the Atmosphere, a theme which is carried over to the album art