- region. The
Powder River Basin is the
largest coal-producing
region in the
United States. The
region includes the
Black Thunder Coal
Mine, the most productive...
- Gunpowder, also
commonly known as
black powder to
distinguish it from
modern smokeless powder, is the
earliest known chemical explosive. It
consists of...
-
Smokeless powder is a type of
propellant used in
firearms and
artillery that
produces less
smoke and less
fouling when
fired compared to
black powder. Because...
- Talc in
powdered form,
often combined with corn starch, is used as baby
powder. This
mineral is used as a
thickening agent and lubricant. It is an ingredient...
-
Peabody Energy opened the
North Antelope Mine in the
heart of Wyoming's
Powder River Basin in 1983. The Roc****e
mine was
opened in 1984. They were combined...
- lead was
found in the
mines as a by-product of the silver, from
which ancient Gr****s
produced face
powder. The use of face
powder also
appears in the work...
-
pounds of
black powder buried near the
surface and was
activated by
stepping on it or
tripping a wire that made a
flintlock fire. Such
mines were deplo****...
-
blasting powder. Only 7
miners escaped without injury.
Safety violations have been
cited as a
cause for the explosion, by
sending miners into the
mine with...
-
adopted Shimose powder, with its
composition treated as top secret, from 1893 – not only for
naval artillery but also for
naval mines,
depth charges and...
-
pounds of
powder to
blast the rock and 2,256,000 feet (688,000 m) of
Douglas fir to
timber the shaft.: 128 In its
early days the
McIntyre mine was a nightmare...