The 325th Fighter Wing is host to more than 30 tenant organizations located at Tyndall Air Force Base, Florida. The wing consists of the 325th Operations Group, 325th Maintenance Group, 325th Mission Support Group and 325th Medical Group.
Making a compact disc involves first preparing a glass disc master. This master is then encoded with the desired information and put through a series of electroforming steps. In electroforming, metal layers are deposited on the glass master using electric currents.
Answer Wiki. , I am an expert on a number of issues, but only if you consider zero a number. It appears that sometime in the early 1990's (1991 to be exact), the compact disc overtook cassette tapes for music sales, in the USA. Fortune has some data compiled from RIAA and other sources over the years found here.