SIC Code 1231: Producing anthracite or in developing anthracite mines. All establishments in the United States that are classified in this industry
Establishments primarily engaged in producing anthracite or in developing anthracite mines. All establishments in the United States that are classified in this industry are located in …
This major group includes establishments primarily engaged in producing bituminous coal, anthracite, and lignite. Included are mining operations and preparation plants (also …
In this paper, the DIMPACT parameter extraction results are demonstrated for a 45 V, 15 A Si Schottky diode, a 600 V, 200 A Si PiN diode, a 10 kV, 5 A SiC JBS diode, and a 10 …
Highlights. •. High-temperature direct acid leaching is highly effective for separating metal ions and silica in coal gangue. •. An increase in temperature …
An extraction process was developed and demonstrated for two of those water sources containing the highest concentration of REEs. A method involving metal …
This division includes all establishments primarily engaged in mining. The term mining is used in the broad sense to include the extraction of minerals occurring naturally: solids, …
The Anthracite is a region living in the shadow of industrial collapse. Historically, it was a place destined to be inseparable, culturally and psychically, from exploitative, industrial coal extraction.
In this essay I examine three images that document 200 years of digging for coal in one Pennsylvania location. Historical documents serve an important function by transmitting images of past-place into the …
Extraction of selected rare earth elements from anthracite acid mine drainage using supercritical CO2 via coagulation and complexation. Harold Schobert. 2020, Journal of …