- 行业: Mining
- Number of terms: 33118
- Number of blossaries: 0
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The U.S. Bureau of Mines (USBM) was the primary United States Government agency conducting scientific research and disseminating information on the extraction, processing, use, and conservation of mineral resources.
Founded on May 16, 1910, through the Organic Act (Public Law 179), USBM's missions ...
A red, fossiliferous sedimentary iron ore; e.g., the Clinton Formation (Middle Silurian) or correlative rocks of the east-central United States, containing lenticular or oolitic grains of hematite. It supplies the ironworks at Birmingham, AL.
Industry:Mining
A reddish or brownish variety of cassiterite in botryoidal or reniform shapes with internal concentric or fibrous structure.
Industry:Mining
A reddish-brown residual soil found as a mantle over limestone bedrock, typically in the karst areas around the Adriatic Sea, under conditions of Mediterranean-type climate. Also spelled: terra rosa. Etymol: Italian, red earth.
Industry:Mining
A redundant frame in which the bending moments and reactions cannot be calculated from statical equations alone.
Industry:Mining