how many people does it take to make an ordinary wooden...
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How many people does it take to make
an ordinary wooden pencil?
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Incense-cedar trees are used because
their fine grain, soft wood, and low
resin content.
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Lumber jacks in Oregon and northern
California cut down cedar trees.
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The limbs are cut off of the tree.
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The logs are loaded onto trucks ...
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… and
delivered to a
mill in
San Leandro
California.
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Trucks run on
diesel fuel.
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Where do we get the crude oil
needed to make diesel gas?
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Much of the oil
imported into
the U.S. comes
from OPEC
countries like
Saudi Arabia
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At the mill in San Leandro, the logs are cut
into rectangular blocks called slats. Each
slat is 7 inches (17.78 centimeters) long and
3 inches (7.62 centimeters) wide, and
one-quarter inch (0.63 centimeters) thick --
half the thickness of a pencil.
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11http://www.calcedar.com/products/slats/incense/index.htm
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The slats are shipped by rail to a
factory in Jersey City, New Jersey.
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When they arrive at the
factory, a machine cuts
nine grooves into one
side of each slat.http://www.generalpencil.com/how1l.html
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At the factory, resources from around the
world are combined to make a pencil.
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The “lead” used in pencils is a mixture of
graphite, clay, and gums.
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Some of the world’s purest graphite comes
from the Bogala mine in Sri Lanka
http://www.conceptispuzzles.c
om/articles/pencil_ratings/pen
cil_ratings.htm
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The graphite is loaded into a cargo container...
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… a truck takes the container to the port ...
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… where the container is unloaded from the truck ...
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… and is loaded onto a ship...
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… and then
heads for the
United States …
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… through the Suez Canal …
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… across the Mediterranean Sea and the Atlantic Ocean
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Workers in
South Korea
built the ship
that carries
the graphite
to the U.S.
SOURCE: Wall Street Journal
Online, page C1, June 11, 2007
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The ship is registered in Liberia.
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The ship is owned by a
French-Dutch joint venture.
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When the ship arrives in the United States …
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… the container is taken by truck to the pencil factory …
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… where the graphite is unloaded.
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Candelilla wax from Mexico is added to make
the pencil lead smooth and strong.
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http://www.texasbeyondhistory.net/waxcamps/techniques.html
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The amount of clay used determines the
hardness of the lead. Perhaps the clay in your
pencil came from Mississippi.
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The graphite, clay, and wax are blended
together with water for up to three days.
http://generalpencil.com/gpc_ourpencils_how.html
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A grey sludge is left behind when the
water is squeezed out by a machine.
http://generalpencil.com/gpc_ourpencils_how.html
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The dried sludge is ground into a fine
powder which is combined with water to
make a soft paste. This is pushed
through a metal tube to make thin rods.
http://generalpencil.com/gpc_ourpencils_how.html
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A machine then puts the pencil lead into the grooves.
http://generalpencil.com/gpc_ourpencils_how.html
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Then two slats are glued together to make
a “pencil sandwich”.
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Nine pencils are
carved out of each
pencil sandwich.http://generalpencil.com/gpc_ourpencils_how.html
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These plain pencils are then sanded
and receive several coats of lacquer.
http://generalpencil.com/gpc_ourpencils_how.html
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Castor oil is one of the main
ingredients of lacquer.
Farmers in tropical Africa
grow castor beans.
http://www.ansci.cornell.edu/plants/castorbean.html#description
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The black lettering on a pencil is a
combination of carbon black and resins.
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A plant in Borger, Texas, makes carbon black.
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The piece of metal that holds the eraser is
called the ferrule. It is made of brass, which
is a combination of zinc and copper.
Two thirds of the world’s reserves of zinc are in
the U.S., Canada, Australia, the Former Soviet
Union, and Ireland.
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Former Soviet Union
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Sources of copper include
Bolivia, Chile, and Zambia
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Zambia
copper mine
Zambia
copper refinery
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The plug, or eraser, is a
combination of many
different ingredients
including pumice from Italy
or Ecuador.
http://generalpencil.com/gpc_ourpencils_how.html
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Ecuador
Quito
Pumice mine
near Quito,
Ecuador
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The substance that erases what you
have written is the result of a chemical
reaction between sulfur chloride and the
oil from a seed grown in Indonesia.
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So how many people participate in the production
of a simple wooden pencil? Far more than anyone
would suspect. And only a few of those involved
even know that a pencil is the end product of their
labor. Through specialization, people from
around the world contribute to making your
wooden pencil. Without even knowing it, they
interact with each other indirectly. How much does
this pencil cost? Less than a quarter -- far less
than if any single person tried to produce it with no
one else’s help. The international pencil is truly a
bargain.
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People from around the world are
involved in making a pencil.
ECUADOR
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Created by:
Dr. Lawrence C. Wolken
Texas A&M UniversityAdapted from and updated
"I, Pencil: My Family Tree as told to Leonard E. Read"
and the "How a Mongol Pencil is Made" kit