United States Bureau of Mines

Francis Rolt-Wheeler The Boy With the U.S. Miners

There aren't any door-boys in a modern mine. Most of the States in this country have passed laws requiring that all doors through which coal cars pass must be operated automatically. The United States Bureau of Mines keeps a sharp lookout, too. There aren't any donkeys, either, not in up-to-date mines; endless-chain conveyors take the coal from the face where the miner has dug it clear to the mouth of the shaft, and load it into the buckets by a self-tipping device. As for small boys in a mine, as you said yourself, there aren't any, not in the United States, anyhow.
Source: Gutenberg

by the United States government United States Code, Title 30 — Chapter 1…

It shall be the province and duty of the United States Bureau of Mines, subject to the approval of the Secretary of the Interior, to conduct inquiries and scientific and technologic investigations concerning mining, and the preparation, treatment, and utilization of mineral substances with a view to improving health conditions, and increasing safety, efficiency, economic development, and conserving resources through the prevention of waste in the mining, quarrying, metallurgical, and other mineral industries
Source: Wikisource

by the United States government United States Code, Title 30 — Chapter 1…

Nothing herein shall be construed as preventing the temporary employment by the United States Bureau of Mines, at a compensation not to exceed $10 per day, in a consulting capacity or in the investigation of special subjects, of any engineer or other expert whose principal professional practice is outside of such employment by said bureau.
Source: Wikisource

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