327 (Nonmetallic Mineral Product Manufacturing)

Coreslab Structures is a pioneer in the construction industry, providing cutting-edge precast/prestressed concrete products that are both durable and cost-effective.� Coreslab Structures is a pioneer in the construction industry, providing cutting-edge precast/prestressed concrete products that are both durable and cost-effective.

Concrete Industries, Inc. is primarily engaged in manufacturing structural concrete products.

Ash Grove, a CRH Company, is a leader and pioneer in the cement industry.� For over 142 years, we have provided cementitious materials to construct the highways, bridges, commercial and industrial complexes, homes, and other structures fundamental to the nation�s economic vitality and quality of life.

Yankee Hill Brick Manufacturing Company is primarily engaged in manufacturing brick and structural clay tile.

Watkins Concrete Block Company, Inc. is primarily engaged in manufacturing concrete building block and brick from a combination of cement and aggregate.

Valmont Newmark, Inc. is manufactures steel utility poles and associated structurers.

U-Mix Products is primarily engaged in manufacturing and bagging of cement related products.

Panhandle Concrete Products, Inc. is primarily engaged in manufacturing pre-cast concrete products.

Nox-Crete Products Group, Inc. is primarily engaged in manufacturing concrete additive products.

Tethon Corporation is primarily engaged ceramic 3D printing.