| What is Asbestos?
Asbestos is a natural fibrous material mined from serpentine
rock. This rock is crushed and fibrous strands of asbestos are
extracted from the rock. The strands are then used as ingredients
in insulation, ceiling tiles and other materials. Three major
types of asbestos used commercially are:
Chrysotile, or white asbestos, has curly fibers and is known
as serpentine because it is found in serpentine rocks. This asbestos
is mined mostly in Canada and then shipped to the United States
and is used predominantly in products manufactured in the United
States.
Crocidolite, or blue asbestos, has rod like fibers, this form
is the least used in the United States.
Amosite has brown rod like fibers belonging to the amphibole group,
and containing iron and magnesium.
Items Containing Asbestos
Most insulation materials before the mid-1970s contained asbestos.
More than 5,000 products have contained asbestos. A few of the
products containing asbestos are:
Cement sheets and pipe products used for roofing and siding,
electrical casings, fireproofing spray and materials, building
materials and piping.
Asbestos paper products like tables pads, industrial filters,
wire insulation and heat protective mats
Friction products like brakes and clutches
Textile products like roofing materials, fire-resistant materials
Also included are plastics, artificial ashes and embers, paints,
caulking
Shipyards Where Asbestos was used
US Navy
Portsmouth
Puget Sound
Pearl Harbor
Norfolk
Commercial
American Shipyard Corp.
AMFELS, Inc.
Atlantic Marine Shipyards
Avondale Industries, Inc.
Bender
Bollinger Shipyards, Inc.
Colonna's Shipyard, Inc.
Cascade General
Eastern Shipbuilding Group
Ingalls Shipbuilding
Halter Marine Group, Inc.
Honolulu Marine, Inc.
McDermott Shipbuilding Inc.
Metro Machine Corporation
National Steel and Shipbuilding Company
Norfolk Shipbuilding & Drydock Corporation
Ocean Technical Services, Inc
Portland Ship Yard
San Francisco Shipyards
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