Montana Limestone Resources, LLC (MLR)

Montana Limestone Resources, LLC (MLR) is proposing to develop a quarry and plant to extract and process limestone to produce lime. The 546-acre permit area is located approximately 2.5 miles west of Drummond, Montana, in Granite County (Figure 1.0-1). The permit area includes the mine site (pit, plant, waste stockpiles, topsoil stockpiles, impoundments, haul roads) and access road from State Highway 1 to the mine. The permit area occurs mostly on property owned by Washington Limestone Resources, LLC (WLR). The MLR project will consist of:

  • An open pit mine from which 7,000 tons of limestone per week will be extracted by drilling and blasting along benches and loading the rock into mine haul trucks
  • A crushing/screening plant that reduces rock to a desired size for the processing operation
  • A preheater rotary kiln that processes limestone to produce lime
  • Storage/loading/shipping facilities to transport the lime
  • Mine infrastructure to support the operation (access road, haul roads, natural gas pipeline, power line, water wells, water lines, sediment control structures, and mining equipment)
Decision Letter
Final Environmental Assessment
Draft Environmental Assessment
Public Scoping Report Revised (October 4, 2019)
Complete and Compliant Application (July 26, 2018)