- Techniques of excavating, grading, and earth removal
- Use of special implements and apparatus
- Specialized personnel and organization; etc.
- Mining and quarrying 316
- Manufacture of earth-moving machines 392
- Explosives 389 Earth -moving machines 406
- Digging tools 412
- Weight moving 483
- Railway and highway construction 499
- Dredging 503
Outline of Cultural Materials. George P. Murdock, et al., eds. New Haven, Conn. Human Relations Area Files, Inc. 1961. xxv, 164 p.