Iowa Limestone Producers Association - Limestone Resource
Rock characteristics for both ore and waste are typical of those of granite or porphyritic material. Operating conditions, wage scales, and unit prices are typical for western U.S. mining operations. All costs listed are in 2012 US . The key design criteria, operating schedule, equipment, personnel, supply requirements and costs are listed below:Complete List of Line Mines For Sale. Includes Claims, Mineral Properties, Tenures, Tenements, Projects, & Deposits for Lease, Option, Joint Venture.