General Shale

General Shale is also listed under the following categories: Standard Yellow Pages Heading (SYPH) Categories:

• Brick Clay, Common & Face
• Concrete Blocks & Shapes

North American Industry Classification System (NAICS) Categories:

• Home Centers > Masonry Materials & Supplies > Brick Clay, Common & Face
• Other Building Material Dealers > Concrete/Cement & Products > Concrete Blocks & Shapes

Standard Industry Classification (SIC) Categories:

• Lumber & Other Building Materials > Masonry Materials & Supplies > Brick Clay, Common & Face
• Lumber & Other Building Materials > Masonry Materials & Supplies > Concrete Blocks & Shapes