# Relationship history for MSHA mine 4701325

Current hierarchy: **Jacklin Ron → Jacklin Construction Inc → Jacklin Pit**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** Jacklin Construction → Jacklin Pit; 1950-01-01 to 1988-08-22; source msha-controller-operator-history
- **controller_controls_mine:** Jacklin Benjamin & Webster → Jacklin Pit; 1950-01-01 to 1988-08-22; source msha-controller-operator-history
- **controller_controls_operator:** Jacklin Benjamin & Webster → Jacklin Construction; 1950-01-01 to 1988-08-22; source msha-controller-operator-history
- **operator_operates_mine:** Jacklin Construction Inc → Jacklin Pit; 1988-08-23 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jacklin Ron → Jacklin Pit; 1988-08-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jacklin Ron → Jacklin Construction Inc; 1988-08-23 to current/open; source msha-controller-operator-history