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Methods of mining disseminated lead ore at a mine in the Southeast Missouri district
Mining ore in open stopes, Central and Eastern United States
Small-scale placer-mining methods
Small-scale placer-mining methods
Summary of ore-mining cost data
Lead and zinc mining and milling in the United States :current practices and costs
Summary of drifting and crosscutting cost data
Annual report of the Mining Division for the fiscal year 1937
Federal placer-mining laws and regulations
Federal placer-mining laws and regulations,
Annual report of the Mining Division, for the fiscal year 1938