- 行业: Mining
- Number of terms: 33118
- Number of blossaries: 0
- Company Profile:
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 ...
An excavation system involving a digging bucket, cable, and boom, which permits the recovery of sediments and rocks from trenches, canals, and pits that contain or are covered by water.
Industry:Mining
An excavation through which mine water is conducted in order to reduce its velocity, thus allowing sediment to settle and to be cleaned out from time to time.
Industry:Mining
An excavation through which mine water is conducted in order to reduce its velocity, thus allowing sediment to settle and to be cleaned out from time to time.
Industry:Mining
An excavation through which mine water is conducted in order to reduce its velocity, thus allowing sediment to settle and to be cleaned out from time to time.
Industry:Mining
An excavator base machine fitted with boom and bucket for excavating and loading material from an exposed face above track level.
Industry:Mining
An excavator consisting of a crane carrying a large grab or bucket in the form of a pair of half-scoops, so hinged as to scoop or dig into the earth as they are lifted.
Industry:Mining
An excavator consisting of a series of buckets attached to a continuous chain, guided by two or more ladders. The buckets are drawn against the bank face, taking a cut of constant depth, while simultaneously the machine moves slowly along the ground on a bench above or below the bank; often used in opencast mining in soft deposits.
Industry:Mining
An excavator that digs ditches by means of a chain of traveling buckets supported by a boom.
Industry:Mining
An excavator working on the same principle as the bucket-ladder dredger but designed to work on land.
Industry:Mining
An exceedingly corrosive mixture of one part by weight of nitric acid and two parts by weight of sulfuric acid. Used in the manufacture of nitroglycerin.
Industry:Mining
