§ 570.68 Occupations in excavation operations (Order 17).

(a) Finding and declaration of fact. The following occupations in excavation operations are particularly hazardous for the employment of persons between 16 and 18 years of age:

(1) Excavating, working in, or backfilling (refilling) trenches, except (i) manually excavating or manually backfilling trenches that do not exceed four feet in depth at any point, or (ii) working in trenches that do not exceed four feet in depth at any point.