| Domain | Definition | ||
| Occupations | Signals or relays signals to operators of hoisting equipment engaged in raising or lowering loads and pumping or conveying materials, such as concrete and gunite, by telephoning, blowing whistle, motioning by hand or flag, or by pulling bell cord. May remove dogs, chains, or slings from hoisted material. (references) | ||
Source: compiled by the editor from various references; see credits. | Top | ||
