Browse TRAIL Inventories

Recent developments in the mining industry

Barite and barium products.

Men and mines

Barite and barium products.

The work of the United States Bureau of Mines

The mineral industry and the young engineer

Mining methods and costs at metal mines of the United States

The mineral industry

Mining and technology graduates and their problems

Bonuses to encourage safe work and for work safely done

Summary of ore-mining cost data


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