Locally owned and operated Mountain Mud Service & Supply, Inc. is located in Gillette, Wyoming and is the Powder River Basins ... only full service drilling fluid supply company. Fully stocked product lines ranging from standard and specialty drilling mud and chemical products, production and workover fluids, cementing or float equipment, in stock and special order pit liners and erosion controls, as well as rental equipment. Utilizing our private fleet gives us the ability to deliver, load, pick-up, or drop ship products 24 hours a day, 7 days a week - no matter the load size. read more