|
|
How is asbestos used
Asbestos was mined and used commercially in North America beginning
in the late 1800s. Its use increased greatly during World War II. Since
then, it has been used in many industries. For example, the building and
construction industry has used it for strengthening cement and plastics
as well as for insulation, fireproofing, and sound absorption. The
shipbuilding industry has used asbestos to insulate boilers, steampipes,
and hot water pipes. The automotive industry uses asbestos in vehicle
brakeshoes and clutch pads. More than 5,000 products contain or have
contained asbestos. Some of them are listed below:
 |
Asbestos cement sheet and pipe products used for water supply and
sewage piping, roofing and siding, casings for electrical wires,
fire protection material, electrical switchboards and components,
and residential and industrial building materials;
 |
Friction products, such as clutch facings, brake linings for
automobiles, gaskets, and industrial friction materials;
 |
Products containing asbestos paper, such as table pads and
heat-protective mats, heat and electrical wire insulation,
industrial filters for beverages, and underlying material for sheet
flooring;
 |
Asbestos textile products, such as packing components, roofing
materials, and heat- and fire-resistant fabrics (including blankets
and curtains); and
 |
Other products, including ceiling and floor tile; gaskets and
packings; paints, coatings, and adhesives; caulking and patching
tape; artificial ashes and embers for use in gas-fired fireplaces;
plastics; vermiculite-containing consumer garden products; and some
talc-containing crayons.
|
| | | |
In the late 1970s, the U.S. Consumer Product Safety Commission (CPSC)
banned the use of asbestos in wallboard patching compounds and gas
fireplaces because the asbestos fibers in these products could be
released into the environment during use. Additionally, asbestos was
voluntarily withdrawn by manufacturers of electric hair dryers. In 1989,
the U.S. Environmental Protection Agency (EPA) banned all new uses of
asbestos; uses established prior to 1989 are still allowed. The EPA has
established regulations that require school systems to inspect for
damaged asbestos and to eliminate or reduce the exposure to occupants by
removing the asbestos or encasing it. In June 2000, the CPSC concluded
that the risk of children’s exposure to asbestos fibers in crayons was
extremely low. However, the U.S. manufacturers of these crayons agreed
to reformulate their products within a year. In August 2000, the EPA
recommended that consumers reduce possible asbestos exposure from
vermiculite-containing garden products by limiting the amount of dust
produced during use. The EPA suggested that consumers use vermiculite
outdoors or in a well-ventilated area; keep vermiculite damp while using
it; avoid bringing dust from vermiculite use into the home on clothing;
and use premixed potting soil, which is less likely to generate dust.
The regulations described above and other actions, coupled with
widespread public concern about the hazards of asbestos, have resulted
in a significant annual decline in U.S. use of asbestos: Domestic
consumption of asbestos amounted to about 719,000 metric tons in 1973,
but it had dropped to about 9,000 metric tons by 2002. Asbestos is
currently used most frequently in gaskets and in roofing and friction
products. |
Mesothelioma,
asbestos cancer or drugs home page
| |
|