Knife River (Helgeson Site)

Knife River (Helgeson Site) is also listed under the following categories: Standard Yellow Pages Heading (SYPH) Categories:

• Concrete Ready Mix
• Sand & Gravel

North American Industry Classification System (NAICS) Categories:

• Ready-Mix Concrete Manufacturing
• Home Centers > Masonry Materials & Supplies > Sand & Gravel
• Other Building Material Dealers > Concrete/Cement & Products > Concrete - Ready-Mixed

Standard Industry Classification (SIC) Categories:

• Ready-Mixed Concrete
• Lumber & Other Building Materials > Masonry Materials & Supplies > Sand & Gravel
• Lumber & Other Building Materials > Concrete Ready-Mixed