- A
fossil fuel is a
carbon compound- or hydrocarbon-containing
material formed naturally in the Earth's
crust from the
buried remains of
prehistoric organisms...
- A
fossil (from
classical Latin fossilis, lit. 'obtained by digging') is any
preserved remains, impression, or
trace of any once-living
thing from a past...
-
Steelmaking is the
process of
producing steel from iron
ore and/or s****.
Steel has been made for millennia, and was
commercialized on a m****ive scale...
- in situ
within an
ore body
moderated by
groundwater was
briefly explored by Paul
Kuroda in 1956. The
existence of an
extinct or
fossil nuclear fission reactor...
- carbon-based
fossil fuels. The
original organic matter, with the aid of heat and pressure,
becomes a fuel such as oil or gas.
Earth minerals and
metal ores, fossil...
- to
decompose the
ore,
driving off
other elements as
gases or slag and
leaving the
metal behind. The
reducing agent is
commonly a
fossil-fuel
source of carbon...
- the
Ancient Gr**** word σίδηρος (sídēros),
meaning "iron". A
valuable iron
ore, it
consists of 48% iron and
lacks sulfur and phosphorus. Zinc, magnesium...
-
structure of the stem
tissue may be
partially retained.
Unlike other plant fossils,
which are
typically impressions or compressions,
petrified wood is a three-dimensional...
-
processed states such as raw latex,
crude oil, cotton, coal, raw biom****, iron
ore, plastic, air, logs, and water. The term
secondary raw
material denotes waste...
-
mines which were
driven by horses. This
cable car was used to
transport fossil ore in
small containers. At that time, coal was
considered the most durable...
