Browse TRAIL Inventories

Mining and milling methods, Inland Lime and Stone Co., Port Inland, Michigan

Mining methods and costs, Iowa Gypsum deposits

Mining methods of the Fort Dodge Limestone Company, Inc., Fort Dodge, Iowa

Sand and gravel operations and costs, Concrete Materials and Construction Division, Martin Marietta Corp., West Des Moines, Iowa

Mining and beneficiating methods and costs at two crushed- limestone operations, Madison County, Iowa

Sand and gravel operations and costs, Minneapolis-St. Paul area, Minn.


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