Manufacturing Although artificial slags of any type are available to meet your stringent white slag practices, packaged Hilime,, and Dololime are also readily available. Flolime® and Hidoflo® of various flavors are in stock and ready for prompt quotation. Whether it be a stock item or a custom blend, Mid River Minerals cannot be beat when it comes to cost, quality and on-time delivery. Mid River also offers contract packaging, warehousing and distribution utilizing rail transport, pneumatic transport, flatbed and bulk trucking.