Special trade contractors primarily engaged in masonry work, stone setting, and other stone work. Special trade contractors primarily engaged in concrete work are classified in Industry 1771; those engaged in digging foundations are classified in Industry 1794; and those engaged in the construction of streets, highways, and alleys are classified in Industry 1611.
- Bricklaying-contractors
- Chimney construction and maintenance-contractors
- Concrete block laying-contractors
- Foundations, building of: block, stone, or brick-contractors
- Marble work, exterior construction-contractors
- Masonry-contractors
- Refactory brick construction-contractors
- Retaining wall construction: block, stone, or brick-contractors
- Stone setting-contractors
- Stonework erection-contractors
- Tuck pointing-contractors