I just checked & the Hilton International opened in 1970. So the Peppermill closed in the mid 1970's I stayed at HI when it first opened. While there I played craps at peppermill. It was closed on my next visit to Las Vegas. Peppermill Restraunt & Pepperemill Casino are in same area but not on same location. I do not believe they were open under Peppermill name at the same time.