# Relationship history for MSHA mine 1513060

Current hierarchy: **Conley Meritt → Zion Mining Company → Zion Mining Co Inc #5**

- 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

- **controller_controls_mine:** David F  May → Zion Mining Co Inc #5; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** M & W Coal Company Inc → Zion Mining Co Inc #5; 1981-08-01 to 1982-09-30; source msha-controller-operator-history
- **controller_controls_operator:** David F  May → M & W Coal Company Inc; 1981-08-01 to 1982-09-30; source msha-controller-operator-history
- **operator_operates_mine:** M & W Coal Company Inc → Zion Mining Co Inc #5; 1982-10-01 to 1984-03-22; source msha-controller-operator-history
- **controller_controls_mine:** M Lynn  Parrish → Zion Mining Co Inc #5; 1982-10-01 to 1984-03-22; source msha-controller-operator-history
- **controller_controls_operator:** M Lynn  Parrish → M & W Coal Company Inc; 1982-10-01 to 1984-03-22; source msha-controller-operator-history
- **operator_operates_mine:** Zion Mining Company → Zion Mining Co Inc #5; 1984-03-23 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Conley Meritt → Zion Mining Co Inc #5; 1984-03-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Conley Meritt → Zion Mining Company; 1984-03-23 to current/open; source msha-controller-operator-history