-
since then.
Since then,
NIOSH developed a
Coal Dust
Explosibility Meter (CDEM) to test the
mixture between coal and rock dust in mines. This
field testing...
- oven. It is
typically about 4
meters (13 ft) wide and 2.5
meters (8 ft) high. The roof has a hole for
charging the
coal or
other kindling from the top...
- A
Meter Point Administration Number, also
known as MPAN,
Supply Number or S-Number, is a 21-digit
reference used in
Great Britain to
uniquely identify...
-
Coal mining is the
process of
extracting coal from the
ground or from a mine.
Coal is
valued for its
energy content and
since the 1880s has been widely...
- An air flow
meter is a
device similar to an
anemometer that
measures air flow, i.e. how much air is
flowing through a tube. It does not
measure the volume...
- this mine. They ****erted that they were
exploiting two
seams of
coal, each one
meter thick, of
impeccable quality and
continually announced discoveries...
- that a flow
meter is able to
measure with
acceptable accuracy. It is also
known as rangeability. It is
important when
choosing a flow
meter technology...
- (thirty
meters deep). He also dug two test pits. The
first encountered coal at a
depth of
seven meters. The
second encountered coal at five
meters, before...
- 6000
meters (19,685 feet) elevation. Four
major summits exceed 5000
meters (16,404 feet), nine
exceed 4500
meters (14,764 feet), 104
exceed 4000
meters (13...
-
vapour (H2O)—from
coal and water, air and/or oxygen. Historically,
coal was
gasified to
produce coal gas, also
known as "town gas".
Coal gas is combustible...
