For five generations, people with imagination, innovation and determination have built National into one of the strongest, most dependable sources of crushed stone, sand and gravel, lime, and industrial mineral products in the world.

     A key issue facing every natural resource company is to provide clean, consistent products to each customer from a basic raw material mined from the earth.

    Internally designed, automated, computer-controlled production and quality assurance systems ensure that every National product offers the finest quality at the most competitive price. During processing, both operations and laboratory personnel monitor and control quality.

     National's fully-equipped, modern lab monitors quality control by continually performing a variety of physical and chemical analyses on finished products.

     Management and National is truly a unique blend of "hands-on" professionals who take the time to understand customers' needs, to manufacture quality products, and to ensure that the products produced are available when and where the customer need them.