Aluminium foil foil rolling mills to the desired thickness, or by continuously casting and cold rolling. To maintain a constant thickness in aluminium foil production, beta radiation is passed through the foil to a sensor on the other side. If the intensity becomes too high, then the rollers adjust, increasing the thickness. If the intensities become too low and the foil has become too thick, the rollers apply more pressure, causing the foil to be made thinner. The continuous casting method is much less energy intensive and has become the preferred process. For thicknesses below , two layers are usually put together
That's What Love Is Made Of at the concert, as she had retired from onstage and TV performances earlier that year for family reasons after touring caused her to have miscarriages, but she continued singing on their records as a non-touring member of The Miracles. The Miracles' "That's What Love Is Made Of" has inspired cover versions by Michael Jackson, Bobby Vee, Choker Campbell, and The Magicians, and has appeared on many Miracles "Greatest Hits" albums and CD Anthologies. The song's flip side was the popular regional Miracles hit tune, "Would I Love You", which was included on "Greatest Hits from the Beginning" but did not