1. The steam fog signal was also converted to a compressor-driven diaphone. 2. In 1879, a steam fog whistle was installed at the cost of $ 5000. 3. Fog was a major problem, and a steam fog whistle was installed in 1874. 4. A steam fog signal was also installed . which was thereafter replaced by a diaphone. 5. In 1875, the first steam fog signal on Lake Michigan was installed replacing the fog bell. 6. This results in what is called steam fog . 7. In 1890 a steam fog whistle was added, and in 1893 a circular oil house was built. 8. For " Center Beam ", a low pressure hot water steam fog became a medium to project lasers, holograms, films and text onto. 9. The temperature stood at 4 degrees, the lowest reading so far this season and sufficiently cold enough to allow a steam fog to form. 10. "' Evaporation fog "'or "'steam fog "'forms over bodies of water overlain by much colder air; this situation can also lead to steam devils forming.
