Because of a lapse in government funding, the information on this
website may not be up to date, transactions submitted via the
website may not be processed, and the agency may not be able to
respond to inquiries until appropriations are enacted. The NIH
Clinical Center (the research hospital of NIH) is open. For more
details about its operating status, please visit
cc.nih.gov. Updates
regarding government operating status and resumption of normal
operations can be found at
opm.gov.
A high-grade metamorphic coal having a semimetallic luster, high content of fixed carbon, and high density, and burning with a short blue flame and little smoke or odor. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)
Coal of relatively recent origin, intermediate between peat coal and bituminous coal. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)
A dark brown to black coal that is high in carbonaceous matter and has 15-50% volatile matter. Also known as soft coal. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)