# Relationship history for MSHA mine 1508392

Current hierarchy: **Dotson Starlin → Broyles & Dotson Coal Company → 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:** Dotson Jimmy → No 1; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Dotson Starlin Et Al → No 1; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Dotson & Rife Coal Company Inc → No 1; 1975-07-01 to 1976-01-14; source msha-controller-operator-history
- **controller_controls_operator:** Dotson Jimmy → Dotson & Rife Coal Company Inc; 1975-07-01 to 1976-01-14; source msha-controller-operator-history
- **operator_operates_mine:** Broyles & Dotson Coal Company → No 1; 1976-01-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dotson Starlin Et Al → Broyles & Dotson Coal Company; 1976-01-15 to current/open; source msha-controller-operator-history