LINKS
The Levy Group of Companies is actively involved with many industry-specific organizations and is a member in good standing with associations throughout the world.

Aggregates Manager is dedicated to serving the
information needs of the entire aggregates industry, from front office to
front-end loader.

If you're in the aggregate, concrete or asphalt
business, aggregateRESEARCH.com is your sole resource for practical solutions,
as well as technical and industry information. Use the valuable free services;
news, question and answer forum, industry financial analysis and/or the online
software to enhance your business in the construction materials market.
aggregateRESEARCH.com is brought to you by ARI -
Communications.

AISI serves as the voice of the North American
steel industry in the public policy arena and advances the case for steel in the
marketplace as the preferred material of choice. AISI also plays a lead role in
the development and application of new steels and steelmaking technology. AISI
is comprised of 31 member companies, including integrated and electric furnace
steelmakers, and 130 associate and affiliate members who are suppliers to or
customers of the steel industry. AISI's member companies represent approximately
75 percent of both U.S. and North American steel capacity. For more news about
steel and its applications, view AISI’s Web site at
www.steel.org.

The Asphalt Institute is the international trade
association of petroleum asphalt producers, manufacturers and affiliated
businesses. Asphalt Institute publications and seminars educate users and
specifiers on proper practices for the design, construction, maintenance, and
rehabilitation of all types of asphalt pavements. AI also offers laboratory
services and publishes Asphalt magazine.

The Association for Iron & Steel Technology
(AIST) is an international technical association with more than 9,000 members
representing iron and steel producers, related suppliers and those in
metallurgy, engineering and materials science academia. AIST is dedicated to
advancing the technical development, production, processing and application of
iron and steel.

The Asphalt Pavement Association of Michigan is a
nonprofit trade association representing the Hot Mix Asphalt industry in
Michigan. Organized in 1950, MAPA's fifty-eight members included Hot Mix Asphalt
(HMA) producers and paving contractors and related industry materials, equipment
and service providers.

Headquartered in Washington, D.C., American Road
& Transportation Builders Association is a full-service association with
more than 5,000 members, whose eight membership divisions reveal its industry's
diversity: contractors, planning and design, transportation officials, traffic
safety, materials and services, public-private ventures in transportation,
research & education and equipment manufacturers. ARTBA holds annual
meetings and conferences, maintains standing committees, policy advisory
councils, and professional development sections that work on issues to promote
the effectiveness and efficiency of the transportation construction industry.

The Australasian (iron & steel) Slag
Association (ASA) is an independent, authoritative and credible central
reference point for all stakeholders- members, community, educators and
government on all matters regarding iron & steel slag materials.

The Civil Engineering Database (CEDB) is designed
to provide easy bibliographic access to all ASCE publications. The database
covers all the journals, conference proceedings, books, standards, manuals,
magazines, and newspapers. Journal papers with abstracts go back to 1970.
Non-abstract journal records go back to 1958. The book records are complete
dating back to the early 1900s. The database is constantly expanded and
enriched.

The American Society for Quality,
www.asq.org, is the world's leading authority on quality.
With more than 93,000 individual and organizational members, the professional
association advances learning, quality improvement and knowledge exchange to
improve business results, and to create better workplaces and communities
worldwide. As champion of the quality movement, ASQ offers technologies,
concepts, tools and training to quality professionals, quality practitioners and
everyday consumers, encouraging all to Make Good Great®. ASQ has been the sole
administrator of the prestigious Malcolm Baldrige National Quality Award since
1991. Headquartered in Milwaukee, Wis., the 60-year-old organization is a
founding partner of the American Customer Satisfaction Index (ACSI), a prominent
quarterly economic indicator, and also produces the Quarterly Quality Report.

ASTM International is one of the largest standards development and delivery
systems in the world--meeting the technical needs of commerce for over a
century.
ASTM International provides a forum in which stakeholders from both the
supply and demand sides of the marketplace come together and produce technical
documents for trade and best business practices that are used around the globe.
ASTM’s market relevance is evident in over 100 industrial and management
sectors, ranging from metals, concrete, and construction materials to
environmental assessment, medical devices, and nanotechnology. Over 120 nations
are represented in ASTM International.

The Canadian Steel Producers Association (CSPA) is
the voice of Canada's basic steel producing industry, serving North American
customers in the automotive, construction, energy, packaging, and other
demanding manufacturing applications.

The Colorado Asphalt Pavement Association (CAPA) is
a nonprofit trade association representing the hot mix asphalt industry of
Colorado. Over 200 organizations are members of CAPA, making it the voice of the
asphalt industry throughout the state. CAPA has grown to include both producer
and user organizations. Fifty cities, towns and counties have become members of
CAPA and make use of the technical assistance available through the association.
Whether a large heavy/highway contractor or a small commercial paver, CAPA is
here to serve you and the industry it represents. Check us out!

As a full service company Capital Stoneworks offers fabricating and installation as well as consulting, design and purchasing assistance. Stone products vary in shapes and colors between each piece and our partnership offers the expertise to deliver the right products with the best results.

EUROSLAG was founded in 2000 as an association of
organizations and companies concerned with all aspects of the manufacture and
utilization of slag products.

Research and consulting institute with regard to
the production, processing and use of blast furnace slag and steel slag.

The Institute of Scrap Recycling Industries Inc. (ISRI) is the non-profit trade association that is the "Voice of the Recycling Industry."

Any company, executive, or organization and any manager wishing to join the transformation to a lean way of creating value is welcome in our Lean Community. We exist to support everyone who is starting or continuing the lean journey.

The Michigan Aggregates Association (MAA) is a
non-profit trade association founded in 1960 by a group of conscientious and
environmentally concerned aggregate producers to protect and promote the
interests, growth and welfare of the Michigan aggregates industry.

The Michigan Concrete Association (MCA) was formed, in 2009, by the merger of
the Michigan Concrete Paving Association (MCPA) and the Michigan Concrete Association (MCA).
MCPA was established in 1968 to represent concrete pavement contractors, to promote the use
of concrete pavement and to maintain a high standard of workmanship.
MCA was originally established in 1952 as a forum for the state’s ready-mixed concrete industry
and as an educational resource for consumers.

MITA is a statewide construction trade association
which represents the interests of Michigan's heavy construction industry, which
includes - but is not limited to - creating stable funding mechanisms and member
representation with project owners, unions and other state bureaucracies.

The National Asphalt Pavement Association (U.S.) is
the only trade association that exclusively represents the interests of the
hot-mix asphalt producer/contractor on the national level with Congress,
government agencies, and other national trade and business organizations. NAPA
supports an active research program designed to improve the quality of HMA
pavements and paving techniques used in the construction of roads, streets,
highways, parking lots, airports, and environmental and recreational facilities.
The association provides technical, educational, and marketing materials and
information to its members; supplies product information to users and specifiers
of paving materials; and conducts training courses. The association, which
counts more than 1200 companies as its members, was founded in 1955.

The National Center for Asphalt Technology (NCAT)
was established at Auburn University in 1986, and works to improve hot mix
asphalt performance through research, education, and information services. Their
mission is to be a world leader and authority in hot mix asphalt research,
development, technology, and education in the areas of Structural Design,
Construction Methods, Materials and Testing, Performance Measurement and
Prediction, Pavement Preservation, Rehabilitation, Recycling, and Maintenance,
and Environment and Highway Safety.

The National Slag Association, founded in 1918, is
a trade association uniting iron and steel slag processors world wide. The
primary function of NSA is to communicate and fulfill an advocate position for
iron and steel slag. Slag is the nonmetallic commercial product made in furnaces
simultaneously with iron and steel and used mostly as a construction aggregate.

The National Stone, Sand & Gravel Association
(NSSGA) is the world’s largest mining association by product volume. Its member
companies represent more than 90 percent of the crushed stone and 70 percent of
the sand and gravel produced annually in the U.S. and approximately 118,000
working men and women in the aggregates industry. During 2007, a total of about
2.56 billion metric tons of crushed stone, sand and gravel, valued at $21
billion, were produced and sold in the United States.

Since it was launched in 1916, the first-ever
magazine exclusively for nonmetallic minerals producers, Pit & Quarry has
been the industry leader. Today, offering its more than 24,000 readers
informative articles on equipment and technology, plant operations and key
issues, Pit & Quarry is still out in front.

The Steel Manufacturers Association (SMA) is the
primary trade association for scrap-based electric arc furnace (EAF)
steelmakers, consisting of 39 North American companies and 6 international
companies. The SMA also has 107 Associate Member companies that supply goods and
services to the steel industry.