Chp 3

Front 1

anthracite coal

Back 1

is hard and brittle.

Front 2

aquifier

Back 2

is a rock formation underground.

Front 3

bag filter

Back 3

All solid particles in the waste stream are trapped in the bag filter
prior to the hot waste gases exiting through the smokestack of the power
plant.

Front 4

bitunimous coal

Back 4

a high carbon content.

Front 5

crude oil

Back 5

In
its natural state, petroleum is called crude oil.

Front 6

deep mining

Back 6

mininguses shafts
and special machinery to remove the coal
from deep below the earth's surface

Front 7

strip mining

Back 7

is the mining or removing of coal
close to the earth's surface.

Front 8

land reclamation

Back 8

mining
companies are required to restore the land to usable condition after stiip
mining has taken place.

Front 9

overburden

Back 9

the remaining soil is
removed down to the top of the coal seam.

Front 10

lignite coal

Back 10

This material contains
some woody decomposition that can be recognized as peat, but it has a
higher energy content than peat.

Front 11

peat

Back 11

a step in the formation of coal
more than a type of coal.

Front 12

Subbituminous coal

Back 12

It
contains greater energy content per volume than lignite and is frequently
used as an industrial fuel, for space heating, and for the generation of
electricity.

Front 13

electrostatic precipitator

Back 13

works by positively charging the
waste particles and attracting them to a negatively charged electrode.

Front 14

fly ash

Back 14

The
solid particles are then washed off the electrode and collected.

Front 15

petroleum

Back 15

petroleum is a fossil fuel.

Front 16

fractionating tower

Back 16

crude oil is separated into various

Front 17

Oil shale

Back 17

a 40-50 million-year-old sedimentary
rock containing an oily substance.

Front 18

oil shale

Back 18

The oil
is trapped in the rock and is generally crushed and heated to a minimum

Front 19

tar sands

Back 19

These tar sands are similar to oil shale in that the oil cannot be
retrieved through conventional means, such as well drilling.

Front 20

Lng

Back 20

gas has been placed under pressure at very low
temperatures to create liquefied natural gas

Front 21

therm

Back 21

equivalent to
100 ft3 of natural gas and is typically used instead of the ft3, since the ft3 is
such a smal1 quantity.

Front 22

EPA

Back 22

supports the monitoring of acid rain in this
country.