| Name | Label | Concept | Required | Attribute of | Limit | Predicate Type | Group | |
|---|---|---|---|---|---|---|---|---|
| 1 variable | ||||||||
| HOURS_F | Flag for construction, production and/or development and exploration workers annual hours | Mining: Detailed Statistics by Type of Operation for U.S., States, and Offshore Areas: 2017 | not required | HOURS | 0 | string | EC1721TYPE | |