# Relationship history for MSHA mine 4601314

Current hierarchy: **Majesty Coal Company → Glory Coal Company Inc → Dola Mine**

- 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:** Clinchfield Coal Company → Dola Mine; 1950-01-01 to 1974-04-01; source msha-controller-operator-history
- **controller_controls_mine:** Pittston Company → Dola Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Pittston Company → Clinchfield Coal Company; 1950-01-01 to 1974-04-01; source msha-controller-operator-history
- **controller_controls_mine:** Downing Thurman → Dola Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Ohio Mining Co → Dola Mine; 1974-04-02 to 1978-04-10; source msha-controller-operator-history
- **controller_controls_operator:** Downing Thurman → Ohio Mining Co; 1974-04-02 to 1978-04-10; source msha-controller-operator-history
- **operator_operates_mine:** Glory Coal Company Inc → Dola Mine; 1978-04-11 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Majesty Coal Company → Dola Mine; 1978-04-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Majesty Coal Company → Glory Coal Company Inc; 1978-04-11 to current/open; source msha-controller-operator-history