# Relationship history for MSHA mine 1516944

Current hierarchy: **Lowe Dover → D & L Mining Inc → D And L No 1**

- 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:** Johnson Donald → D And L No 1; 1980-11-07 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Tempest Coal Company Inc → D And L No 1; 1990-08-01 to 1990-12-02; source msha-controller-operator-history
- **controller_controls_mine:** Johnson Donald → D And L No 1; 1990-08-01 to 1990-12-02; source msha-controller-operator-history
- **controller_controls_operator:** Johnson Donald → Tempest Coal Company Inc; 1990-08-01 to 1990-12-02; source msha-controller-operator-history
- **operator_operates_mine:** Tempest Coals Inc → D And L No 1; 1990-12-03 to 1992-11-30; source msha-controller-operator-history
- **controller_controls_mine:** Dotson Dale → D And L No 1; 1990-12-03 to 1992-11-30; source msha-controller-operator-history
- **controller_controls_operator:** Dotson Dale → Tempest Coals Inc; 1990-12-03 to 1992-11-30; source msha-controller-operator-history
- **operator_operates_mine:** Lamplighter Mining Company Inc → D And L No 1; 1992-12-01 to 1993-06-01; source msha-controller-operator-history
- **controller_controls_operator:** Johnson Donald → Lamplighter Mining Company Inc; 1992-12-01 to 1993-06-01; source msha-controller-operator-history
- **operator_operates_mine:** D & L Mining Inc → D And L No 1; 1993-06-02 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Lowe Dover → D And L No 1; 1993-06-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Lowe Dover → D & L Mining Inc; 1993-06-02 to current/open; source msha-controller-operator-history