# Relationship history for MSHA mine 1516208

Current hierarchy: **Anthony K  Dotson; Mark  Dotson → A & M Coal Company Inc → #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:** Aubra P  Dean et al → #1; 1982-11-23 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Lj'S Coal Corp → #1; 1987-10-01 to 1988-02-16; source msha-controller-operator-history
- **controller_controls_operator:** Aubra P  Dean et al → Lj'S Coal Corp; 1987-10-01 to 1988-02-16; source msha-controller-operator-history
- **controller_controls_operator:** Carl E  McAfee et al → Lj'S Coal Corp; 1987-10-01 to 1988-02-16; source msha-controller-operator-history
- **operator_operates_mine:** A & M Coal Company Inc → #1; 1988-02-17 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Anthony K  Dotson et al → #1; 1988-02-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Anthony K  Dotson et al → A & M Coal Company Inc; 1988-02-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mark  Dotson et al → A & M Coal Company Inc; 1988-02-17 to current/open; source msha-controller-operator-history